user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Which continent, formerly part of the Roman Empire, is the location of the fictional universe, Mortal Engines? 
Knowledge Triplets: Europe, fictional_universe.fictional_setting.contains, Calbia
Europe, fictional_universe.fictional_setting.contains, Duchy of Cagliostro
Mortal Engines, fictional_universe.fictional_universe.organizations, Lost Boys
Mortal Engines, book.book.editions, Mortal Engines (Hungry City Chronicles (Sagebrush))
Roman Empire, location.location.events, Second Dacian War
Europe, base.locations.continents.countries_within, United Kingdom
Armenia, location.location.events, Roman–Parthian War of 58–63
Battle of Edessa, time.event.locations, Roman Empire
m.07nfqr2, base.ontologies.ontology_instance_mapping.freebase_topic, Roman Empire
Battle of the Weser River, base.culturalevent.event.entity_involved, Roman Empire
North Africa, location.location.contains, Sahara
Fictional Universe, type.type.domain, Fictional Universes
Mortal Engines, book.written_work.original_language, English Language
m.0b697rf, award.award_honor.honored_for, Mortal Engines
Mortal Engines, fictional_universe.fictional_universe.organizations, Remembering Machines
Fictional Universe, type.type.properties, Works Set Here
Antarctica, location.location.events, Solar eclipse of April 29, 2014
The Roman Empire and Its Germanic Peoples, book.written_work.author, Herwig Wolfram
Mortal Engines, fictional_universe.fictional_universe.locations, Grimsby
Mortal Engines, award.award_nominated_work.award_nominations, m.0b698zj
Battle of Resaena, time.event.locations, Roman Empire
Fictional Universe, type.type.properties, Contains fictional settings
Fictional Universe, type.type.properties, Characters
Europe, location.location.partially_contains, Tartar
Europe, location.location.partiallycontains, m.0wg8l58
Roman Empire, location.location.people_born_here, Eudoxius of Antioch
Europe, location.location.partiallycontains, m.0wzlw0c
Fictional Universe, type.type.expected_by, Game Worlds
Europe, location.location.partiallycontains, m.0113v7b6
Philip Reeve, book.author.book_editions_published, Mortal Engines (Hungry City Chronicles (Paperback))
m.0b698zj, award.award_nomination.nominated_for, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8lbm
Siege of Yodfat, base.culturalevent.event.entity_involved, Roman Empire
Mortal Engines, fictional_universe.fictional_universe.locations, London
Traction City, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Battle of Brumath, base.culturalevent.event.entity_involved, Roman Empire
m.04ht2ff, people.place_lived.location, Rome
Mortal Engines, fictional_universe.fictional_universe.organizations, Anti-Traction League
Fictional Universe, type.type.expected_by, Appears in fictional universe(s)
Egypt, location.location.events, Roman–Persian Wars
Mortal Engines, book.written_work.next_in_series, Predator's Gold
Middle East, location.location.partially_containedby, North Africa
Mortal Engines, fictional_universe.fictional_universe.locations, India
Europe, fictional_universe.fictional_setting.contains, Pottsylvania
Antarctica, fictional_universe.fictional_setting.works_set_here, The Narrative of Arthur Gordon Pym of Nantucket
Europe, location.location.partially_contains, Georgia
Fictional Universe, type.type.expected_by, Part of universe
Roman Empire, location.location.people_born_here, Ulpian
Siberia, fictional_universe.fictional_setting.universe, Mortal Engines
Europe, location.location.partiallycontains, m.0wycr3n
North Africa, location.location.partially_contains, Middle East
Egypt, location.location.partially_containedby, North Africa
Latin Language, language.human_language.region, Europe
Roman Empire, location.location.events, Battle of Resaena
Middle East, location.location.contains, Judea
First Dacian War, time.event.locations, Roman Empire
Mortal Engines, award.award_winning_work.awards_won, m.0b697rf
Gladiator, film.film.subjects, Roman Empire
Borduria, fictional_universe.fictional_setting.contained_by, Europe
Roman Empire, fictional_universe.fictional_language.where_spoken, Latin Language
Europe, location.location.partially_contains, Black Sea
Roman Empire, location.location.events, First Dacian War
Battle of the Lupia River, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partially_contains, Armenia
Mortal Engines, book.book.editions, Mortal Engines
Mortal Engines, fictional_universe.fictional_universe.organizations, Traktionstadtsgesellschaft
Fictional Universe, type.type.expected_by, Appears In These Fictional Universes
North Africa, location.location.partially_contains, Egypt
Europe, location.location.partiallycontains, m.0x2jvdg
Continent, freebase.type_profile.published, Published
Europe, location.location.partially_contains, Mount Achkasar
Middle East, location.location.partiallycontains, m.0ws8wk6
Greenland, fictional_universe.fictional_setting.universe, Mortal Engines
Roman Empire, common.topic.subject_of, Ephesus
Mortal Engines, book.book.editions, Mortal Engines (The Hungry City Chronicles)
Middle East, location.location.contains, Egypt
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.book.genre, Non-fiction
Europe, location.location.partially_contains, Ural River
Europe, location.location.partiallycontains, m.0wg8l4m
Roman Empire, film.film_subject.films, The Robe
m.0ws8wk6, location.partial_containment_relationship.partially_contains, Roman Empire
Fictional Universe, type.type.expected_by, Seen in fictional universe
Europe, location.location.partially_contains, Emba River
Kitos War, base.culturalevent.event.entity_involved, Roman Empire
Mortal Engines, fictional_universe.fictional_universe.characters, Magnus Crome
Roman Empire, fictional_universe.fictional_setting.languages, Greek Language
Middle East, location.location.contains, Mesopotamia
Roman–Parthian Wars, time.event.locations, Armenia
Roman Empire, location.location.people_born_here, Saint Glyceria
Mortal Engines, fictional_universe.fictional_universe.organizations, Resurrection Corps
Europe, location.location.partiallycontains, m.0x2jtck
Roman Empire, common.topic.article, m.06cm_
United Kingdom, location.location.containedby, Europe
Europe, location.location.partiallycontains, m.0wg8ldf
North Africa, location.location.contains, Sudan
m.0ws8w38, location.partial_containment_relationship.partially_contains, Roman Empire
Great Conspiracy, base.culturalevent.event.entity_involved, Roman Empire
Infernal Devices, book.book.editions, Infernal Devices (Mortal Engines Quartet)
Roman–Parthian War of 58–63, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.country.capital, Ravenna
Europe, location.location.partiallycontains, m.0wycqrn
Philip Reeve, book.author.book_editions_published, Mortal Engines
Mortal Engines, fictional_universe.fictional_universe.literary_series_set_here, Predator Cities
Fictional Universe, type.type.expected_by, From Fictional Universe
Europe, location.location.partially_contains, Mount Yamantau
Europe, location.location.partiallycontains, m.0wg8lc7
London, fictional_universe.fictional_setting.works_set_here, Calculated Risk
Oenone Zero, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8lcf
London, fictional_universe.fictional_setting.contains, Diagon Alley
Antarctica, location.location.geolocation, m.02_pkpb
Battle of Ctesiphon, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.adjoin_s, m.03bv0lv
Europe, location.location.partiallycontains, m.0wg8lby
Fictional Universe, type.type.expected_by, Appears in Fictional Universe
Katherine Valentine, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Rome, location.location.containedby, Italy
Mortal Engines, fictional_universe.fictional_universe.characters, Nimrod Pennyroyal
Egypt, location.location.partiallycontains, m.0wg8zh1
Hester Shaw, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
The Roman Empire and Its Germanic Peoples, book.book.genre, Non-fiction
Philip Reeve, book.author.book_editions_published, Mortal Engines (The Hungry City Chronicles)
Anti-Traction League, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8l6f
Pottsylvania, fictional_universe.fictional_setting.contained_by, Europe
Europe, location.location.partially_contains, Mount Dzhimara
Europe, location.location.partiallycontains, m.0wg8ldl
Roman Empire, location.location.people_born_here, Maximilian
Europe, location.location.partially_contains, Russia
Mortal Engines, fictional_universe.fictional_universe.characters, Katherine Valentine
Mesopotamia, location.location.events, Roman–Parthian Wars
Europe, location.location.partiallycontains, m.0wg8l4y
Roman Empire, location.location.people_born_here, Eunomius of Cyzicus
Mortal Engines, fictional_universe.fictional_universe.locations, Anchorage
Europe, location.location.partially_contains, Dombay-Ulgen
Traktionstadtsgesellschaft, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Europe, location.location.partially_contains, Ushba-North Peak
Mortal Engines, fictional_universe.fictional_universe.locations, Greenland
Fictional Universe, freebase.type_hints.included_types, Topic
Europe, base.locations.continents.planet, Earth
Mortal Engines, fictional_universe.fictional_universe.characters, Oenone Zero
Battle of Fano, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.contains, Scythopolis
Green Storm, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Roman Empire, location.location.events, Battle of Barbalissos
Mortal Engines, fictional_universe.fictional_universe.characters, Hester Shaw
Roman Empire, common.topic.image, Roman Empire 117 AD
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.book.genre, Non-fiction
London, fictional_universe.fictional_setting.works_set_here, The System of the World
Cantabrian Wars, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partiallycontains, m.0wg8l72
Europe, location.location.partiallycontains, m.0wg8l8n
Roman Empire, location.location.people_born_here, g.121p62yj
Fictional Universe, freebase.documented_object.documentation, m.02hqp_3
Roman–Parthian Wars, time.event.locations, Mesopotamia
Siege of Senonae, base.culturalevent.event.entity_involved, Roman Empire
Grand Fenwick, fictional_universe.fictional_setting.contained_by, Europe
The History of the Decline and Fall of the Roman Empire: Vol. 4, common.topic.notable_for, g.1257j94pb
Fictional Universe, freebase.type_profile.strict_included_types, Topic
Mortal Engines, common.topic.notable_types, Book
Mortal Engines, common.topic.notable_for, g.125c9g2tg
Fictional Universe, type.type.properties, Species
Battle of Lake Benacus, base.culturalevent.event.entity_involved, Roman Empire
Opus the Penguin, fictional_universe.fictional_character.places_lived, Antarctica
Fictional Universe, type.type.expected_by, Found in (Fictional Universe)
Philip Reeve, book.author.book_editions_published, A Darkling Plain (Mortal Engines Quartet)
Fictional Universe, type.type.expected_by, Featured in Fictional Universe
Europe, fictional_universe.fictional_setting.universe, Mortal Engines
Mortal Engines, book.written_work.subjects, Adventure
Mesopotamia, location.location.events, Roman–Persian Wars
Antarctica, location.location.containedby, Southern Hemisphere
Mortal Engines, fictional_universe.fictional_universe.created_by, Philip Reeve
The System of the World, fictional_universe.work_of_fiction.setting, London
Mortal Engines, fictional_universe.fictional_universe.locations, Nuevo Maya
Sahara, location.location.containedby, North Africa
Mortal Engines, award.award_nominated_work.award_nominations, m.08qhvt1
Fictional Universe, type.type.expected_by, Appears in universes
India, fictional_universe.fictional_setting.universe, Mortal Engines
London, fictional_universe.fictional_setting.contained_by, Airstrip One
Fictional Universe, type.type.expected_by, Part of fictional universes
Second Dacian War, time.event.locations, Roman Empire
Europe, location.location.partiallycontains, m.0wg8ld8
m.0291myr, common.image.appears_in_topic_gallery, Roman Empire
Calbia, fictional_universe.fictional_setting.contained_by, Europe
Mortal Engines, fictional_universe.fictional_universe.locations, Antarctica
London, fictional_universe.fictional_setting.works_set_here, Our Mutual Friend
Roman Empire, book.book_subject.works, Centurion
Philip Reeve, book.author.book_editions_published, Mortal Engines (Hungry City Chronicles (Sagebrush))
Tom Natsworthy, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Antarctica, fictional_universe.fictional_setting.characters_that_have_lived_here, Opus the Penguin
Airstrip One, fictional_universe.fictional_setting.contains, London
Fictional Setting, type.type.domain, Fictional Universes
Battle of the Medway, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.book.genre, Non-fiction
Roman Empire, location.location.partially_contained_by, m.0ws8w7_
Europe, location.location.partiallycontains, m.0ws8w7_
Antarctica, base.locations.continents.counties_within, Chile
Roman Empire, location.location.people_born_here, Paul I of Constantinople
Philip Reeve, book.author.book_editions_published, Infernal Devices (Mortal Engines Quartet)
Roman Empire, location.location.events, Battle of Edessa
Egypt, location.location.primarily_containedby, North Africa
Europe, location.location.partiallycontains, m.0w_0cg4
Roman Empire, location.location.contains, Cilicia
Roman Empire, location.country.capital, Constantinople
Fictional Universe, freebase.type_profile.published, Published
Antarctica, base.locations.continents.counties_within, Argentina
Europe, location.location.partiallycontains, m.0wg8l9b
Theo Ngoni, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Mortal Engines, book.book.characters, Tom Natsworthy
Mortal Engines, fictional_universe.fictional_universe.organizations, Green Storm
Constantinople, fictional_universe.fictional_setting.characters_that_have_lived_here, Sofia Sartor
Roman–Persian Wars, time.event.locations, Egypt
Siege of Singara, base.culturalevent.event.entity_involved, Roman Empire
Stalker, fictional_universe.character_species.found_in_fictional_universe, Mortal Engines
Fictional Universe, type.type.expected_by, From fictional universe
Roman Empire, location.location.people_born_here, g.11b62y00s2
Thaddeus Valentine, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Lazarus Brigade, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
The Roman Empire and Its Germanic Peoples, common.topic.article, m.06n3l2k
London, fictional_universe.fictional_setting.contains, 221B Baker Street
Syldavia, fictional_universe.fictional_setting.contained_by, Europe
Roman Empire, location.statistical_region.population, m.0ngxd03
The History of the Decline and Fall of the Roman Empire: Vol. 2, common.topic.notable_for, g.1255xlhhc
Europe, location.location.partially_contains, Jailik
Europe, location.location.partially_contains, Turkey
Europe, location.location.partiallycontains, m.0wycrg1
m.0ws8w7_, location.partial_containment_relationship.partially_contains, Roman Empire
Roman Empire, common.topic.notable_types, Country
Stargate Atlantis, fictional_universe.work_of_fiction.setting, Antarctica
Europe, location.location.partiallycontains, m.0wg8lcl
Europe, location.location.partially_contains, Alazani
Europe, location.location.partially_contains, Elbrus-East Peak
Fictional Universe, type.type.expected_by, Appears in fictional universe
Europe, location.location.partiallycontains, m.0wycskj
Mortal Engines, fictional_universe.fictional_universe.characters, Thaddeus Valentine
London, fictional_universe.fictional_setting.contains, Number Twelve, Grimmauld Place
Roman Empire, location.location.contains, g.120phpf9
Anchorage, fictional_universe.fictional_setting.universe, Mortal Engines
Battle of Barbalissos, time.event.locations, Roman Empire
Europe, location.location.partially_contains, Dzhangi-Tau
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.book.genre, Non-fiction
Mortal Engines, fictional_universe.fictional_universe.characters, Shrike
Roman Empire, book.book_subject.works, The Gladiator
Antarctica, fictional_universe.fictional_setting.characters_that_have_lived_here, Maddie Fitzpatrick
Nimrod Pennyroyal, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8l77
Europe, fictional_universe.fictional_setting.contains, Latveria
Resurrection Corps, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Antarctica, fictional_universe.fictional_setting.works_set_here, Stargate Atlantis
Philip Reeve, fictional_universe.fictional_universe_creator.fictional_universes_created, Mortal Engines
Roman Empire, location.location.partially_contained_by, m.0ws8wk6
Alexius of Rome, people.deceased_person.place_of_death, Roman Empire
Roman Empire, location.location.people_born_here, Coelia Concordia
Fictional Universe, type.type.expected_by, Source
Maximilian, people.person.place_of_birth, Roman Empire
Roman Empire, location.country.form_of_government, Autocracy
The History of the Decline and Fall of the Roman Empire: Vol. 6, common.topic.notable_for, g.125bd49gz
Mortal Engines, fictional_universe.fictional_universe.locations, Siberia
Battle of Placentia, base.culturalevent.event.entity_involved, Roman Empire
Battle of Mons Seleucus, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partiallycontains, m.0wg8l63
Fictional Universe, type.type.properties, Locations
Fictional Universe, freebase.type_profile.kind, Definition
Battle at the Harzhorn, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partially_contains, Ksani
Europe, location.location.partiallycontains, m.0wycstb
Predator's Gold, book.written_work.previous_in_series, Mortal Engines
At the Mountains of Madness, fictional_universe.work_of_fiction.setting, Antarctica
The History of the Decline and Fall of the Roman Empire: Vol. 3, common.topic.notable_for, g.125b2_z13
Battle of Sarmisegetusa, base.culturalevent.event.entity_involved, Roman Empire
Mortal Engines, common.topic.notable_types, Fictional Universe
Remembering Machines, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8lb4
Europe, location.location.partiallycontains, m.0wg8l5z
Roman Empire, location.location.people_born_here, g.1hb_fx1hx
Croatia, base.locations.countries.continent, Europe
Roman Empire, location.location.people_born_here, Lucifer of Cagliari
Antarctica, base.locations.continents.counties_within, Norway
Battle of Samarra, base.culturalevent.event.entity_involved, Roman Empire
Europe, fictional_universe.fictional_setting.contains, Syldavia
m.0ws8w7_, location.partial_containment_relationship.partially_contained_by, Europe
Battle of Nisibis, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.country.administrative_divisions, Africa Proconsularis
Mortal Engines, fictional_universe.fictional_universe.characters, Theo Ngoni
Roman Empire, location.country.capital, Rome
Antarctica, fictional_universe.fictional_setting.universe, Mortal Engines
m.08qhvt1, award.award_nomination.nominated_for, Mortal Engines
Vatican City, base.locations.countries.continent, Europe
Mortal Engines, book.book.editions, Mortal Engines (Hungry City Chronicles (Paperback))
Duchy of Cagliostro, fictional_universe.fictional_setting.contained_by, Europe
Europe, base.locations.continents.countries_within, Vatican City
Mortal Engines, fictional_universe.fictional_universe.organizations, Lazarus Brigade
Austria, base.locations.countries.continent, Europe
Roman Empire, film.film_subject.films, Gladiator
Lost Boys, fictional_universe.fictional_organization.appears_in_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0w_0895
Roman Empire, book.book_subject.works, The Eagle in the Sand
Battle of Barbalissos, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, base.ontologies.ontology_instance.equivalent_instances, m.07nfqr2
Europe, location.location.adjoin_s, m.03bv0kc
Europe, location.location.partiallycontains, m.0wg8l8f
Mortal Engines, fictional_universe.fictional_universe.characters, Wren Natsworthy
Europe, location.location.partially_contains, Tikhtengen
Ice Wastes, fictional_universe.fictional_setting.universe, Mortal Engines
Roman Empire, book.book_subject.works, The Roman Empire and Its Germanic Peoples
Mortal Engines, fictional_universe.fictional_universe.locations, Sahara
Battle of Caer Caradoc, base.culturalevent.event.entity_involved, Roman Empire
Greek Language, fictional_universe.fictional_language.where_spoken, Roman Empire
Europe, location.location.partially_contains, Diklosmta
Roman Empire, common.topic.image, m.0291myr
Spain, location.location.partially_containedby, North Africa
Philip Reeve, book.author.works_written, Mortal Engines
Battle of Mons Graupius, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Publius Quinctilius Varus
Europe, location.location.partiallycontains, m.0x2jspf
Armenia, location.location.events, Roman–Parthian Wars
Mortal Engines, fictional_universe.fictional_universe.locations, Ice Wastes
Europe, location.location.partiallycontains, m.0xm09xz
Fictional Universe, type.type.properties, Calendar systems
Europe, location.location.partiallycontains, m.0wg8l4g
Europe, location.location.partiallycontains, m.0wjpmq4
Mortal Engines, fictional_universe.fictional_universe.species, Stalker
Number Twelve, Grimmauld Place, fictional_universe.fictional_setting.contained_by, London
Italy, base.locations.countries.continent, Europe
221B Baker Street, fictional_universe.fictional_setting.contained_by, London
Battle of Vindonissa, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partiallycontains, m.0zmpsl6
North Africa, location.location.contains_major_portion_of, Egypt
Antarctica, common.topic.image, LocationAntarctica
Siberia, fictional_universe.fictional_setting.contains, Ust-Ordynski Collective farm
Mortal Engines, book.written_work.part_of_series, Predator Cities
Anna Fang, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Europe, location.location.partiallycontains, m.0wg8l5f
Africa Proconsularis, location.administrative_division.country, Roman Empire
Fictional Universe, freebase.type_profile.equivalent_topic, Fictional Universe
The Roman Empire and Its Germanic Peoples, common.topic.notable_for, g.125byq35r
Scythopolis, location.location.containedby, Roman Empire
Roman Empire, location.location.geolocation, m.0wmrmtf
Mortal Engines, fictional_universe.fictional_universe.organizations, Traction City
Europe, location.location.partially_contains, Koshtan-Tau
Mortal Engines, fictional_universe.fictional_universe.locations, Europe
Philip Reeve, book.author.book_editions_published, Mortal engines
Roman Empire, location.location.partially_contained_by, m.0ws8w7_
Fictional Universe, type.type.expected_by, Found in fictional universe
Mortal Engines, fictional_universe.fictional_universe.locations, Airhaven
Roman Empire 117 AD, common.image.appears_in_topic_gallery, Roman Empire
Europe, location.location.partially_contains, Russian Empire
Wren Natsworthy, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Roman–Parthian Wars, base.culturalevent.event.entity_involved, Roman Empire
Continent, freebase.type_hints.included_types, Location
Antarctica, fictional_universe.fictional_setting.works_set_here, At the Mountains of Madness
Cilicia, location.location.containedby, Roman Empire
Mortal Engines, book.book.editions, Mortal engines
Fictional Universe, type.type.properties, Languages
Grimsby, fictional_universe.fictional_setting.universe, Mortal Engines
Fictional Setting, type.type.expected_by, Locations
Roman Empire, location.location.partially_contained_by, m.0ws8w38
Russian Empire, location.location.partially_containedby, Europe
Europe, location.location.partially_contains, Azhdahak
Roman Empire, location.location.people_born_here, Alexius of Rome
Europe, location.location.partially_contains, France
Mortal Engines, fictional_universe.fictional_universe.characters, Tom Natsworthy
A Darkling Plain, book.book.editions, A Darkling Plain (Mortal Engines Quartet)
Fictional Universe, type.type.properties, Literary series set here
Europe, location.location.partiallycontains, m.0wg8l8t
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.book.genre, Non-fiction
Battle of Bagrevand, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partially_contains, g.1235dxm_
Europe, fictional_universe.fictional_setting.contains, Grand Fenwick
Battle of Thermopylae, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partiallycontains, m.0wg8l9_
Roman Empire, fictional_universe.fictional_setting.languages, Greek Language
Roman Empire, common.topic.image, RomanEmpire large
Roman Empire, base.schemastaging.context_name.pronunciation, g.125_qw5d4
Battle of Durocortorum, base.culturalevent.event.entity_involved, Roman Empire
Europe, location.location.partially_contains, Mount Agepsta
Roman–Parthian War of 161–166, base.culturalevent.event.entity_involved, Roman Empire
Mortal Engines, book.written_work.author, Philip Reeve
Continent, type.type.domain, Location
Nuevo Maya, fictional_universe.fictional_setting.universe, Mortal Engines
Europe, location.location.partially_contains, Kodori River
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.book.genre, Non-fiction
Mortal Engines, fictional_universe.fictional_universe.characters, Anna Fang
Roman Empire, location.location.people_born_here, Augustine of Hippo
Europe, location.location.partiallycontains, m.0wg8l7s
Roman Empire 117 AD, common.image.size, m.02d35gm
Roman Empire, location.country.official_language, Latin Language
Latveria, fictional_universe.fictional_setting.contained_by, Europe
Europe, location.location.partiallycontains, m.0wg8l9j
Battle of Immae, base.culturalevent.event.entity_involved, Roman Empire
Antarctica, base.locations.continents.planet, Earth
Europe, location.location.partially_contains, Psou River
Roman–Persian Wars, time.event.locations, Mesopotamia
Fictional Universe, type.type.properties, FeaturedObjects
Fictional Universe, type.type.expected_by, Used in fictional universes
Predator Cities, book.literary_series.fictional_universe, Mortal Engines
Mortal Engines, fictional_universe.fictional_universe.locations, Europe
Fictional Universe, type.type.properties, Organizations
Cilicia, common.topic.image, Roman Empire 125
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.book.genre, Non-fiction
North Africa, location.location.partiallycontains, m.0ws8w38
Roman Empire, location.location.people_born_here, Demophilus of Constantinople
Fictional Universe, type.type.properties, Created by
Europe, fictional_universe.fictional_setting.contains, Borduria
Mesopotamia, location.location.events, Roman–Parthian War of 161–166
London, fictional_universe.fictional_setting.contains, Ministry of Magic
United Kingdom, base.locations.countries.continent, Europe
Southern Hemisphere, location.location.contains, Antarctica
Europe, location.location.partially_contains, Gora Kukurtli-Kolbashi
Roman Empire, fictional_universe.fictional_setting.languages, Latin Language
Europe, location.location.partially_contains, Tebulosmta
Europe, base.locations.continents.countries_within, Andorra
North Africa, location.location.partially_contains, Spain
Fictional Universe, type.type.expected_by, Fictional universes created
Europe, location.location.geometry, m.04kgyyj
Airhaven, fictional_universe.fictional_setting.universe, Mortal Engines
Predator Cities, book.literary_series.works_in_this_series, Mortal Engines
Europe, location.location.partially_contains, Jangi-Tau-East Peak
Greek Language, language.human_language.region, Europe
Sudan, location.location.containedby, North Africa
Europe, location.location.partially_contains, Mount Shani
Battle of Forum Julii, base.culturalevent.event.entity_involved, Roman Empire
Roman–Parthian Wars, base.culturalevent.event.entity_involved, Parthian Empire
London, fictional_universe.fictional_setting.universe, Mortal Engines
Shrike, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Antarctica, base.locations.continents.counties_within, United Kingdom
Roman Empire, common.topic.notable_for, g.1255jhsl0
Fictional Universe, type.type.expected_by, Universe
Europe, location.location.partiallycontains, m.0wg8l87
Magnus Crome, fictional_universe.fictional_character.appears_in_these_fictional_universes, Mortal Engines
Tom Natsworthy, book.book_character.appears_in_book, Mortal Engines
Ulpian, people.person.place_of_birth, Roman Empire
Groland, fictional_universe.fictional_setting.contained_by, Europe
Fictional Universe, common.topic.article, m.02hqp_3
Siege of Amida, base.culturalevent.event.entity_involved, Roman Empire
Europe, fictional_universe.fictional_setting.contains, Groland
Sahara, fictional_universe.fictional_setting.universe, Mortal Engines
Latin Language, fictional_universe.fictional_language.where_spoken, Roman Empire
RomanEmpire large, common.image.appears_in_topic_gallery, Roman Empire
Europe, location.location.partiallycontains, m.0wg8l6l

Answer: Europe