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 continents were part of the roman empire? 
Knowledge Triplets: The History of the Decline and Fall of the Roman Empire: Vol. 3, common.topic.notable_types, Book
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.subjects, Roman Empire
Battle of Sarmisegetusa, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Ulpian
Roman Empire, military.military_combatant.military_conflicts, m.04yyn4w
Roman Empire, military.military_combatant.military_conflicts, m.04yyp6x
First Dacian War, time.event.locations, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 2, common.topic.notable_for, g.1255xlhhc
Roman Empire, location.location.partially_contained_by, m.0ws8w38
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 6
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.author, Edward Gibbon
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 3
Roman Empire, base.monetarydebase.governments_that_debase.largest_denomination, m.05b9fpl
Roman Empire, military.military_combatant.military_conflicts, m.04yynbg
Roman Empire, military.military_combatant.military_conflicts, m.04z0bs7
Roman Empire, military.military_combatant.military_conflicts, m.04yw_16
Battle of Forum Julii, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 4
Roman Empire, military.military_combatant.military_conflicts, m.048zz0x
Roman Empire, military.military_combatant.military_conflicts, m.04yyp4p
Roman Empire, military.military_combatant.military_commanders, m.048zt0d
Roman Empire, common.topic.subject_of, Ephesus
m.0291myr, common.image.appears_in_topic_gallery, Roman Empire
Roman Empire, location.statistical_region.population, m.0ngxd03
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 3
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 7
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.book.genre, Non-fiction
Roman Empire, location.country.capital, Rome
Jewish–Roman wars, base.culturalevent.event.entity_involved, Roman Empire
Latin Language, language.human_language.region, Europe
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 4
Siege of Jerusalem, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.subjects, Decline of the Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yypjj
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 7
The History of the Decline and Fall of the Roman Empire: Vol. 3, common.topic.article, m.06wf5mz
Roman Empire, location.location.contains, Scythopolis
Battle of Mons Seleucus, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.0c05v9w
Roman–Persian Wars, base.culturalevent.event.entity_involved, Byzantine Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yyx6k
Roman Empire, military.military_combatant.military_conflicts, m.04yynj8
Roman–Parthian War of 58–63, base.culturalevent.event.entity_involved, Roman Empire
Cantabrian Wars, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 7, common.topic.notable_types, Book
Roman Empire, location.location.people_born_here, Alexius of Rome
Roman Empire, military.military_combatant.military_conflicts, m.04yyhld
Roman–Persian Wars, base.culturalevent.event.entity_involved, Sasanian Empire
Battle of Thyatira, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 1
Roman Empire, book.book_subject.works, Memoirs of Hadrian
First Jewish–Roman War, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Coelia Concordia
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 1
Roman Empire, military.military_combatant.military_conflicts, m.04yynhl
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.subjects, Decline of the Roman Empire
Roman Empire, location.location.geolocation, m.0wmrmtf
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.subjects, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.subjects, Roman Empire
Roman Empire, location.location.people_born_here, Publius Quinctilius Varus
Roman Empire, military.military_combatant.military_conflicts, m.04y_9f9
Roman Empire, location.country.official_language, Latin Language
Roman Empire, military.military_combatant.military_conflicts, m.04yxbg4
Roman Empire, military.military_combatant.military_conflicts, m.05nxjh8
Battle of Lake Benacus, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_commanders, m.05prg1q
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 5
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Roman Empire, location.location.people_born_here, Paul I of Constantinople
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 5
Roman Empire, military.military_combatant.military_conflicts, m.04yynwh
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 2
Roman Empire, military.military_combatant.military_conflicts, m.04yx1rk
Roman Empire, military.military_combatant.military_conflicts, m.04y_8r5
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Roman Empire, common.topic.notable_types, Country
Kitos War, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 5, common.topic.article, m.06wf8ks
Roman Empire, military.military_combatant.military_conflicts, m.0b7hgc7
Roman Empire, location.location.events, Battle of Barbalissos
Alexius of Rome, people.person.place_of_birth, Roman Empire
Roman–Persian Wars, base.culturalevent.event.entity_involved, Parthian Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 5
The Roman Empire and Its Germanic Peoples, common.topic.article, m.06n3l2k
Battle of Placentia, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, fictional_universe.fictional_setting.languages, Greek Language
Roman–Parthian War of 161–166, base.culturalevent.event.entity_involved, Parthian Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.subjects, Roman Empire
Roman Empire, location.location.people_born_here, Maximilian
Roman Empire, location.country.capital, Constantinople
Roman Empire, military.military_combatant.military_commanders, m.048zz14
Roman Empire, military.military_combatant.military_conflicts, m.04yyp4d
Battle of Abritus, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 7
Roman Empire, common.topic.image, Roman Empire 117 AD
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Centurion, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yytvg
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.author, Edward Gibbon
Roman Empire, common.topic.article, m.06cm_
m.0ws8wk6, location.partial_containment_relationship.partially_contains, Roman Empire
Roman Empire, location.location.events, Second Dacian War
Roman Empire, common.topic.image, m.0291myr
Roman Empire, military.military_combatant.military_conflicts, m.04yyn8f
Roman Empire, location.location.events, First Dacian War
The History of the Decline and Fall of the Roman Empire: Vol. 5, common.topic.notable_types, Book
The History of the Decline and Fall of the Roman Empire: Vol. 7, common.topic.notable_for, g.125bpyqpc
Roman Empire, military.military_combatant.military_conflicts, m.04z6xxv
Roman Empire, military.military_combatant.military_conflicts, m.04y_8s7
Cilicia, location.location.containedby, Roman Empire
First Dacian War, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yybcw
Roman Empire, military.military_combatant.military_conflicts, m.0t5qtbp
Roman Empire, location.location.people_born_here, g.11b62y00s2
Roman Empire, military.military_combatant.military_conflicts, m.04yyhq9
The Roman Empire and Its Germanic Peoples, book.book.genre, Non-fiction
Roman Empire, fictional_universe.fictional_setting.languages, Latin Language
Roman Empire, military.military_combatant.military_conflicts, m.04yz542
Roman Empire, military.military_combatant.military_conflicts, m.04yypjc
Battle of the Lupia River, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yx36x
Roman Empire, location.location.partially_contained_by, m.0ws8wk6
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.author, Edward Gibbon
Roman Empire, base.services.costume_styles.costume_shop, Costumes Empire
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.author, Edward Gibbon
Roman Empire, location.location.partially_contained_by, m.0ws8w7_
Roman Empire, military.military_combatant.military_conflicts, m.04z212s
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 4
Roman Empire, location.location.people_born_here, g.1hb_fx1hx
m.0ws8wk6, location.partial_containment_relationship.partially_contained_by, Middle East
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 5
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.book.genre, Non-fiction
The History of the Decline and Fall of the Roman Empire: Vol. 2, common.topic.notable_types, Book
Roman Empire, fictional_universe.fictional_setting.languages, Greek Language
Roman Empire, location.location.people_born_here, Augustine of Hippo
Marcomannic Wars, base.culturalevent.event.entity_involved, Roman Empire
m.0ws8w38, location.partial_containment_relationship.partially_contains, Roman Empire
The Roman Empire and Its Germanic Peoples, common.topic.notable_for, g.125byq35r
Roman Empire, military.military_combatant.military_commanders, m.0b7hhs4
Second Dacian War, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.0fs6xjh
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.book.genre, Non-fiction
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.book.genre, Non-fiction
The History of the Decline and Fall of the Roman Empire: Vol. 1, common.topic.notable_for, g.1256c6b48
Edward Gibbon, book.author.series_written_or_contributed_to, The History of the Decline and Fall of the Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.subjects, Decline of the Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.author, Edward Gibbon
Roman Empire, military.military_combatant.military_conflicts, m.048zsyf
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.subjects, Decline of the Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 1, common.topic.article, m.06wdx_3
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.subjects, Roman Empire
The Roman Empire and Its Germanic Peoples, book.book.editions, The Roman Empire and Its Germanic Peoples
Roman Empire, location.location.events, Battle of Resaena
Roman–Parthian Wars, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04z74p6
Roman Empire, military.military_combatant.military_conflicts, m.04yyndt
Roman Empire, military.military_combatant.military_conflicts, m.04yzgh6
Roman–Parthian War of 58–63, base.culturalevent.event.entity_involved, Parthian Empire
Roman Empire, book.book_subject.works, The Eagle in the Sand
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.book.genre, Non-fiction
Battle of Philippopolis, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.0fs821s
Roman Empire, military.military_combatant.military_commanders, m.048zt4f
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 4
Roman Empire, location.location.people_born_here, g.121p62yj
Roman Empire, military.military_combatant.military_conflicts, m.04z4n1f
The History of the Decline and Fall of the Roman Empire: Vol. 2, common.topic.article, m.06wf42n
Maximilian, people.person.place_of_birth, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yv0k1
Roman Empire, military.military_combatant.military_conflicts, m.0jmx43y
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 3
Roman Empire, film.film_subject.films, Gladiator
Roman Empire, location.country.administrative_divisions, Africa Proconsularis
Roman Empire, base.ontologies.ontology_instance.equivalent_instances, m.07nfqr2
Roman Empire, military.military_combatant.military_conflicts, m.048zt8g
Roman Empire 117 AD, common.image.size, m.02d35gm
Battle of Brumath, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Eudoxius of Antioch
The History of the Decline and Fall of the Roman Empire: Vol. 1, common.topic.notable_types, Book
Roman Empire, military.military_combatant.military_conflicts, m.04ywrm8
Roman Empire, military.military_combatant.military_conflicts, m.04yv15g
m.0ws8w38, location.partial_containment_relationship.partially_contained_by, North Africa
The History of the Decline and Fall of the Roman Empire: Vol. 4, common.topic.notable_types, Book
Roman–Parthian War of 161–166, base.culturalevent.event.entity_involved, Roman Empire
The Eagle in the Sand, book.written_work.subjects, Middle East
Roman Empire, military.military_combatant.military_conflicts, m.04yypd1
Roman Empire, military.military_combatant.military_conflicts, m.04yyl91
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.subjects, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 2
Roman Empire, military.military_combatant.military_conflicts, m.04z21j3
Roman Empire, location.country.capital, Ravenna
Roman Empire, military.military_combatant.military_conflicts, m.04yw37r
Roman Empire, book.book_subject.works, The Age of Constantine the Great
Roman Empire, military.military_combatant.military_conflicts, m.04z0r85
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 2
Battle of the Weser River, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.author, Edward Gibbon
The Roman Empire and Its Germanic Peoples, book.written_work.subjects, Germanic peoples
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.subjects, Decline of the Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.next_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 7
Roman Empire, military.military_combatant.military_conflicts, m.0fs8d74
Roman Empire, book.book_subject.works, The Eagle in the Sand
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.book.genre, Non-fiction
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 2
The History of the Decline and Fall of the Roman Empire: Vol. 4, common.topic.article, m.06wf6xp
Roman Empire, military.military_combatant.military_conflicts, m.04yvzx5
Gladiator, film.film.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yvn32
Roman Empire, military.military_combatant.military_commanders, m.048zt46
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.subjects, Decline of the Roman Empire
Ephesus, common.topic.subjects, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.author, Edward Gibbon
Roman Empire, military.military_combatant.military_conflicts, m.04yyp76
Roman–Persian Wars, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 2
Siege of Amida, base.culturalevent.event.entity_involved, Roman Empire
Battle of Thermopylae, base.culturalevent.event.entity_involved, Roman Empire
Siege of Yodfat, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yynht
Roman Empire, military.military_combatant.military_conflicts, m.04yyp3_
Roman Empire, military.military_combatant.military_commanders, m.048zs__
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Roman Empire, location.location.partially_contained_by, m.0ws8wk6
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.subjects, Roman Empire
m.0ws8w7_, location.location.partiallycontains, Europe
Roman Empire, military.military_combatant.military_conflicts, m.04z0r7n
Battle of Mons Graupius, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Demophilus of Constantinople
Roman Empire, military.military_combatant.military_conflicts, m.04z74kq
Roman Empire, location.country.official_language, Latin Language
Roman Empire, common.topic.image, RomanEmpire large
Battle of Adamclisi, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.location.people_born_here, Lucifer of Cagliari
Siege of Senonae, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, base.schemastaging.context_name.pronunciation, g.125_qw5d4
Syria, common.topic.image, Roman Empire 125
Siege of Singara, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 7, common.topic.article, m.06wffb9
The History of the Decline and Fall of the Roman Empire: Vol. 6, common.topic.notable_for, g.125bd49gz
Roman Empire, military.military_combatant.military_conflicts, m.04yv1hl
Roman Empire, location.location.contains, g.120phpf9
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 6
Battle of Resaena, base.culturalevent.event.entity_involved, Roman Empire
The Roman Empire and Its Germanic Peoples, book.written_work.author, Herwig Wolfram
Roman Empire, military.military_combatant.military_conflicts, m.04y_7j9
The Roman Empire and Its Germanic Peoples, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04y_8_s
Roman Empire, military.military_combatant.military_conflicts, m.04yypm5
Battle of Argentovaria, base.culturalevent.event.entity_involved, Roman Empire
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 1
Roman Empire, military.military_combatant.military_conflicts, m.04y_9hc
Roman Empire, military.military_combatant.military_conflicts, m.04y_96k
RomanEmpire large, common.image.appears_in_topic_gallery, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.05prg15
Roman Empire, book.book_subject.works, Centurion
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.part_of_series, The History of the Decline and Fall of the Roman Empire
Roman Empire, location.location.partially_contained_by, m.0ws8w7_
Roman Empire, book.book_subject.works, The Roman Empire and Its Germanic Peoples
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 6
Roman Empire, military.military_combatant.military_conflicts, m.04ytytf
Roman Empire, military.military_combatant.military_conflicts, m.0648xgk
Cilicia, common.topic.image, Roman Empire 125
Roman Empire, location.location.people_born_here, Eunomius of Cyzicus
Roman Empire, location.location.partially_contained_by, m.0ws8w38
The History of the Decline and Fall of the Roman Empire: Vol. 3, common.topic.notable_for, g.125b2_z13
Roman Empire 117 AD, common.image.appears_in_topic_gallery, Roman Empire
Germanic peoples, book.book_subject.works, The Roman Empire and Its Germanic Peoples
The Roman Empire and Its Germanic Peoples, book.book.editions, The Roman Empire and its Germanic peoples
Herwig Wolfram, book.author.works_written, The Roman Empire and Its Germanic Peoples
Battle of Solicinium, base.culturalevent.event.entity_involved, Roman Empire
m.0ws8w7_, location.partial_containment_relationship.partially_contains, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 6, common.topic.article, m.06wfbgp
The History of the Decline and Fall of the Roman Empire: Vol. 5, common.topic.notable_for, g.1256r8_4g
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 1
Roman Empire, military.military_combatant.military_conflicts, m.04yypmf
Roman Empire, location.country.form_of_government, Autocracy
Roman Empire, military.military_combatant.military_conflicts, m.04z31gb
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.book.genre, Non-fiction
The Roman Empire and Its Germanic Peoples, book.translated_work.translations, The Roman Empire and Its Germanic Peoples
Gothic War, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, film.film_subject.films, The Robe
Roman Empire, military.military_combatant.military_commanders, m.0wzb909
Battle of Durocortorum, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.previous_in_series, The History of the Decline and Fall of the Roman Empire: Vol. 3
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.book.editions, The History of the Decline and Fall of the Roman Empire: Vol. 3
Africa Proconsularis, location.administrative_division.country, Roman Empire
Battle of Antioch, base.culturalevent.event.entity_involved, Roman Empire
Greek Language, language.human_language.region, Europe
Battle of Nisibis, base.culturalevent.event.entity_involved, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, common.topic.notable_for, g.1257j94pb
Roman–Parthian Wars, base.culturalevent.event.entity_involved, Parthian Empire
Roman Empire, book.book_subject.works, The Gladiator
The Roman Empire and Its Germanic Peoples, common.topic.notable_types, Book
Roman Empire, military.military_combatant.military_conflicts, m.04yymzq
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 6
Roman Empire, military.military_combatant.military_conflicts, m.04yyhqj
Roman Empire, location.location.events, Battle of Edessa
Roman Empire, military.military_combatant.military_conflicts, m.04yy59k
Roman Empire, military.military_combatant.military_conflicts, m.04yyx56
m.07nfqr2, base.ontologies.ontology_instance_mapping.freebase_topic, Roman Empire
Roman Empire, common.topic.notable_for, g.1255jhsl0
The History of the Decline and Fall of the Roman Empire: Vol. 2, book.written_work.subjects, Decline of the Roman Empire
Roman Empire, location.location.people_born_here, Saint Glyceria
Roman Empire, military.military_combatant.military_conflicts, m.04yvlvy
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 4
Edward Gibbon, book.author.works_written, The History of the Decline and Fall of the Roman Empire: Vol. 5
The History of the Decline and Fall of the Roman Empire: Vol. 6, common.topic.notable_types, Book
Roman Empire, military.military_combatant.military_conflicts, m.07ssb0k
Roman Empire, military.military_combatant.military_conflicts, m.04yyplz
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 6
Roman Empire, location.location.contains, Cilicia
The Robe, film.film.subjects, Roman Empire
Battle of Immae, base.culturalevent.event.entity_involved, Roman Empire
Great Conspiracy, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.048zt3v
Roman Empire, military.military_combatant.military_conflicts, m.0fs82dk

Answer: Europe
North Africa
Middle East