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: who was emperor diocletian? 
Knowledge Triplets: Demophilus of Constantinople, people.person.place_of_birth, Roman Empire
Eunomius of Cyzicus, people.person.gender, Male
Roman Empire, military.military_combatant.military_conflicts, m.04yyhqj
m.04yyplz, military.military_combatant_group.combatants, Roman Empire
Roman Empire, common.topic.image, Roman Empire 117 AD
Diocletian, user.robert.roman_empire.roman_emperor.emperor_of, Roman Empire
Eudoxius of Antioch, people.person.place_of_birth, Roman Empire
Diocletian's Palace, symbols.namesake.named_after, Diocletian
The History of the Decline and Fall of the Roman Empire: Vol. 6, book.written_work.subjects, Roman Empire
Diocletian, people.person.spouse_s, m.0j4l7hx
Lucifer of Cagliari, people.person.place_of_birth, Roman Empire
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
m.048zt4f, military.military_command.military_combatant, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.0648xgk
Roman Empire, military.military_combatant.military_conflicts, m.04yyp4p
Roman Empire, military.military_combatant.military_conflicts, m.0jmx43y
m.04z31gb, military.military_combatant_group.combatants, Roman Empire
m.0gf9wj4, royalty.system_title_relationship.system, Roman Empire
m.04yx1rk, military.military_combatant_group.combatants, Roman Empire
Baths of Diocletian, location.location.geolocation, m.0wmt4wl
Roman Empire, military.military_combatant.military_conflicts, m.04yypm5
Diocletian, people.deceased_person.place_of_death, Split
Roman Empire, military.military_combatant.military_conflicts, m.04y_96k
Roman Empire, military.military_combatant.military_conflicts, m.04yw_16
m.0ws8wk6, location.partial_containment_relationship.partially_contains, Roman Empire
Second Dacian War, time.event.locations, Roman Empire
Diocletien Vaux1, common.image.size, m.0h05b4_
Roman Empire, military.military_combatant.military_conflicts, m.04yyx56
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 7
Roman Empire, military.military_combatant.military_conflicts, m.04z74p6
Diocletian, user.robert.roman_empire.roman_emperor.successor, Galerius
Diocletian, common.image.appears_in_topic_gallery, Diocletian
Diocletian, base.schemastaging.context_name.official_name, Diocletian
m.048zs__, military.military_command.military_combatant, Roman Empire
Roman Empire, location.location.partially_contained_by, m.0ws8wk6
Roman Empire, military.military_combatant.military_conflicts, m.04yvlvy
Roman Empire, military.military_combatant.military_conflicts, m.04yypjc
m.04z0r7n, military.military_combatant_group.combatants, Roman Empire
Diocletian, people.person.date_of_birth, 0244-12-22
Baths of Diocletian, common.topic.article, m.03sr_7
Roman Empire, military.military_combatant.force_deployments, m.0b7hjs5
Diocletian, user.robert.roman_empire.roman_emperor.prececessor, Carinus
Coelia Concordia, people.person.place_of_birth, Roman Empire
Roman Empire, military.military_combatant.military_commanders, m.048zs__
m.04yynhl, military.military_combatant_group.combatants, Roman Empire
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 6
Roman Empire, military.military_combatant.military_conflicts, m.05prg15
Roman Empire, location.location.partially_contained_by, m.0ws8w7_
Roman Empire, common.topic.image, RomanEmpire large
Roman Empire, location.location.people_born_here, g.1hb_fx1hx
Roman Empire, government.governmental_jurisdiction.governing_officials, m.0ngxd7s
Diocletian, freebase.valuenotation.is_reviewed, Date of birth
Diocletian, people.deceased_person.date_of_death, 0313-12-03
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
Diocletian's Palace, base.schemastaging.context_name.pronunciation, m.01314ckm
Roman Empire, base.monetarydebase.governments_that_debase.largest_denomination, m.05b9fpl
Roman Empire, location.location.people_born_here, Demophilus of Constantinople
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, film.film_subject.films, The Robe
Roman Empire, location.location.people_born_here, Lucifer of Cagliari
Memoirs of Hadrian, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yv0k1
Roman Empire, base.ontologies.ontology_instance.equivalent_instances, m.07nfqr2
Diocletian's Palace, location.location.containedby, Croatia
Roman Empire, military.military_combatant.military_commanders, m.048zt0d
The Gladiator, book.written_work.subjects, Roman Empire
Diocletian's Palace, protected_sites.listed_site.designation_as_natural_or_cultural_site, m.02h92lv
Demophilus of Constantinople, people.person.gender, Male
Roman Empire, military.military_combatant.military_conflicts, m.04yyp3_
m.0648xgk, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yyhq9
m.04yyp3_, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.0fs821s
Diocletian, common.topic.notable_types, Monarch
m.0j4l7hx, people.marriage.spouse, Diocletian
Diocletian's Palace, location.location.containedby, Split
m.04yx36x, military.military_combatant_group.combatants, Roman Empire
Saint Glyceria, people.person.place_of_birth, Roman Empire
Adventures by Disney - Italy Vacation, travel.tour_operator.travel_destinations, Baths of Diocletian
m.04yyhld, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.location.geolocation, m.0wmrmtf
m.04yyn4w, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.country.capital, Rome
Diocletian, freebase.valuenotation.is_reviewed, Gender
Roman Empire, military.military_combatant.military_conflicts, m.04yyx6k
Roman Empire, military.military_combatant.military_conflicts, m.04z4n1f
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
The History of the Decline and Fall of the Roman Empire: Vol. 1, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yvzx5
Roman Empire, military.military_combatant.military_conflicts, m.04yymzq
Split, location.location.contains, Diocletian's Palace
m.04z74p6, military.military_combatant_group.combatants, Roman Empire
m.04yypd1, military.military_combatant_group.combatants, Roman Empire
m.048zt0d, military.military_command.military_combatant, Roman Empire
Diocletian's Palace, common.topic.image, A view of the peristyle towards the entrance of Diocletian's quarters
Roman Empire, military.military_combatant.military_conflicts, m.04yynj8
Roman Empire, military.military_combatant.military_conflicts, m.04y_8s7
Roman Empire, military.military_combatant.military_conflicts, m.04z74kq
Roman Empire, military.military_combatant.military_conflicts, m.04yyhld
Diocletian, common.topic.image, Diocletien Vaux1
Gladiator, film.film.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04ywrm8
Roman Empire, location.location.contains, Scythopolis
m.0ws8w38, location.partial_containment_relationship.partially_contains, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yv15g
Galerius, user.robert.roman_empire.roman_emperor.prececessor, Diocletian
Alexius of Rome, people.person.gender, Male
Roman Empire, military.military_combatant.military_conflicts, m.0fs6xjh
Roman Empire, book.book_subject.works, Memoirs of Hadrian
m.05prg1q, military.military_command.military_combatant, Roman Empire
Roman Empire, location.location.people_born_here, Eudoxius of Antioch
Solin, Croatia, location.location.people_born_here, Diocletian
Roman Empire, military.military_combatant.military_conflicts, m.04yyn8f
Roman Empire, military.military_combatant.military_conflicts, m.04yv1hl
Ulpian, people.person.place_of_birth, Roman Empire
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 3
m.04yyndt, military.military_combatant_group.combatants, Roman Empire
m.0ws8w7_, location.partial_containment_relationship.partially_contains, Roman Empire
m.04y_7j9, military.military_combatant_group.combatants, Roman Empire
m.04y_9f9, military.military_combatant_group.combatants, Roman Empire
m.0291myr, common.image.appears_in_topic_gallery, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04z0r7n
Roman Empire, military.military_combatant.military_conflicts, m.0fs8d74
Roman Empire, common.topic.subject_of, Ephesus
Roman Empire, military.military_combatant.military_conflicts, m.04yy59k
Alexius of Rome, people.deceased_person.place_of_death, Roman Empire
Numerian, user.robert.roman_empire.roman_emperor.successor, Diocletian
Roman Empire, military.military_combatant.military_commanders, m.0wzb909
m.04yv0k1, military.military_combatant_group.combatants, Roman Empire
Roman Empire 117 AD, common.image.appears_in_topic_gallery, Roman Empire
Roman Empire, book.book_subject.works, The Gladiator
Roman Empire, military.military_combatant.military_conflicts, m.04yz542
Roman Empire, common.topic.notable_types, Country
Diocletian, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-5258
Roman Empire, military.military_combatant.military_conflicts, m.04yyn4w
Roman Empire, location.location.people_born_here, Eunomius of Cyzicus
Alexius of Rome, people.person.place_of_birth, Roman Empire
Roman Empire, royalty.system_of_nobility.titles, m.0gf9wj4
Roman Empire, military.military_combatant.military_conflicts, m.04yzgh6
Roman Empire, military.military_combatant.military_conflicts, m.0b7hgc7
Roman Empire, military.military_combatant.military_conflicts, m.04yyp76
Roman Empire, book.book_subject.works, The Eagle in the Sand
Ulpian, people.person.nationality, Roman Empire
m.048zz0x, military.military_combatant_group.combatants, Roman Empire
m.04y_8r5, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04y_9hc
Roman Empire, fictional_universe.fictional_setting.languages, Greek Language
Diocletian, freebase.valuenotation.is_reviewed, Place of death
Roman Empire, user.robert.roman_empire.roman_region.emperors, Diocletian
Diocletian, freebase.valuenotation.has_value, Height
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 5
Cathedral of Saint Domnius, people.place_of_interment.interred_here, Diocletian
The History of the Decline and Fall of the Roman Empire: Vol. 5, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04y_9f9
Diocletian, common.topic.notable_for, g.1257t42wh
Diocletian, user.robert.roman_empire.roman_emperor.successor, Constantius Chlorus
Roman Empire, military.military_combatant.military_commanders, m.048zz14
m.0b7hjs5, military.force_strength.combatant, Roman Empire
Roman Empire, military.military_combatant.military_commanders, m.05prg1q
Diocletian, fictional_universe.person_in_fiction.representations_in_fiction, Diocletian
m.04yyn8f, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.07ssb0k
Roman Empire, fictional_universe.fictional_setting.languages, Latin Language
Roman Empire, government.governmental_jurisdiction.governing_officials, m.0w_k7yp
Roman Empire, military.military_combatant.military_conflicts, m.04yynbg
Diocletian's Palace, common.topic.notable_types, Tourist attraction
m.0jmx43y, military.military_combatant_group.combatants, Roman Empire
Diocletian, people.person.gender, Male
Roman Empire, military.military_combatant.military_conflicts, m.04yyndt
m.0b7hhs4, military.military_command.military_combatant, Roman Empire
m.04z0r85, military.military_combatant_group.combatants, Roman Empire
m.0c05v9w, military.military_combatant_group.combatants, Roman Empire
Roman Empire, book.book_subject.works, The Roman Empire and Its Germanic Peoples
Diocletian, user.robert.roman_empire.roman_emperor.prececessor, Numerian
Baths of Diocletian, common.topic.image, The basilica of Santa Maria degli Angeli e dei Martiri, built in the tepidarium of the baths
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
m.0fs82dk, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04y_7j9
Diocletian, symbols.name_source.namesakes, Diocletian's Palace
Roman Empire, military.military_combatant.military_conflicts, m.04yypjj
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
Roman Empire, military.military_combatant.military_conflicts, m.04yw37r
The Roman Empire and Its Germanic Peoples, book.written_work.subjects, Roman Empire
Diocletian, common.topic.notable_for, g.1254_rmmc
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 Age of Constantine the Great, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.048zz0x
Roman Empire, location.location.people_born_here, Saint Glyceria
m.0b7hgc7, military.military_combatant_group.combatants, Roman Empire
Diocletian, people.person.place_of_birth, Solin, Croatia
Baths of Diocletian, architecture.building.building_function, Thermae
Baths of Diocletian, common.topic.notable_for, g.12578hn6s
Roman emperor, user.robert.roman_empire.roman_emperor_title.emperors_with_this_title, Diocletian
m.04z4n1f, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04y_8r5
Roman Empire, military.military_combatant.military_conflicts, m.04yyp4d
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 1
Constantius Chlorus, user.robert.roman_empire.roman_emperor.prececessor, Diocletian
Split, travel.travel_destination.tourist_attractions, Diocletian's Palace
Roman Empire, location.location.events, Second Dacian War
Diocletian, freebase.valuenotation.is_reviewed, Country of nationality
Roman Empire, location.location.contains, Cilicia
Roman Empire, royalty.system_of_nobility.titles, m.0gf9wnr
Roman Empire, military.military_combatant.military_conflicts, m.04yyp6x
m.04yv15g, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.location.people_born_here, Paul I of Constantinople
Roman Empire, military.military_combatant.military_conflicts, m.04y_8_s
Roman Empire, military.military_combatant.military_conflicts, m.04yynhl
Diocletian, opera.opera_character.operas_appears_in, m.0j7z11z
Diocletian, user.robert.roman_empire.roman_emperor.title, Roman emperor
Roman Empire, location.location.people_born_here, Maximilian
m.04z212s, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.location.partially_contained_by, m.0ws8w38
Latin Language, fictional_universe.fictional_language.where_spoken, Roman Empire
Roman Empire, location.location.contains, g.120phpf9
m.04yw37r, military.military_combatant_group.combatants, Roman Empire
Centurion, book.written_work.subjects, Roman Empire
m.02h92lv, protected_sites.natural_or_cultural_site_listing.listed_site, Diocletian's Palace
m.04yyx6k, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.country.capital, Constantinople
Roman Empire, location.location.people_born_here, Publius Quinctilius Varus
The History of the Decline and Fall of the Roman Empire: Vol. 7, book.written_work.subjects, Roman Empire
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, Ulpian
m.0_1kh8g, dataworld.gardening_hint.last_referenced_by, Diocletian
Diocletian, people.deceased_person.place_of_burial, Cathedral of Saint Domnius
Roman Empire, military.military_combatant.military_conflicts, m.04yynht
Roman Empire, military.military_combatant.military_commanders, m.0b7hhs4
Diocletian, user.narphorium.people.nndb_person.nndb_id, 993$002F000087732
m.04yyl91, military.military_combatant_group.combatants, Roman Empire
Roman Empire, base.services.costume_styles.costume_shop, Costumes Empire
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
Roman Empire, military.military_combatant.military_conflicts, m.0t5qtbp
Second Dacian War, base.culturalevent.event.entity_involved, Roman Empire
Diocletien Vaux1, common.image.appears_in_topic_gallery, Diocletian
Diocletian's Palace, freebase.valuenotation.has_value, Opened
Diocletian's Palace, travel.tourist_attraction.near_travel_destination, Split
Roman Empire, military.military_combatant.military_conflicts, m.04ytytf
Byzantine Empire, user.robert.roman_empire.roman_region.emperors, Diocletian
Roman Empire, military.military_combatant.military_conflicts, m.04z6xxv
Roman Empire, military.military_combatant.military_conflicts, m.04yyl91
Roman Empire, military.military_combatant.military_conflicts, m.04z21j3
Roman Empire, common.topic.notable_for, g.1255jhsl0
m.048zt8g, military.military_combatant_group.combatants, Roman Empire
Diocletian, user.robert.roman_empire.roman_emperor.emperor_of, Byzantine Empire
Roman Empire, military.military_combatant.military_conflicts, m.0c05v9w
Roman Empire, military.military_combatant.military_commanders, m.048zt46
Diocletian's Palace, common.topic.notable_for, g.12552sltg
m.0j7z11z, opera.opera_character_voice.character, Diocletian
Roman Empire, military.military_combatant.military_conflicts, m.04yybcw
Diocletian, people.person.children, Galeria Valeria
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.121p62yj
Publius Quinctilius Varus, people.person.gender, Male
Diocletian, freebase.valuenotation.has_value, Parents
m.048zt3v, military.military_combatant_group.combatants, Roman 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
m.0wzb909, military.military_command.military_combatant, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.048zt8g
Diocletian's Palace, architecture.building.building_function, Palace
Roman Empire, location.statistical_region.population, m.0ngxd03
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.05nxjh8
Roman Empire, military.military_combatant.military_conflicts, m.0fs6qvf
Diocletian's Palace, location.location.geolocation, m.0wmcn5n
Roman Empire, military.military_combatant.military_conflicts, m.04z31gb
Diocletian, common.topic.image, Diocletian
m.04ywrm8, military.military_combatant_group.combatants, Roman Empire
Diocletian, user.robert.roman_empire.roman_emperor.title, Roman emperor
m.07nfqr2, base.ontologies.ontology_instance_mapping.freebase_topic, Roman Empire
Carinus, user.robert.roman_empire.roman_emperor.successor, Diocletian
Roman Empire, film.film_subject.films, Gladiator
Roman Empire, military.military_combatant.military_conflicts, m.04yx1rk
m.04yynbg, military.military_combatant_group.combatants, Roman Empire
m.048zt46, military.military_command.military_combatant, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yxbg4
Diocletian, common.topic.notable_types, Fictional Character
Roman Empire, book.book_subject.works, The History of the Decline and Fall of the Roman Empire: Vol. 2
Ephesus, common.topic.subjects, Roman Empire
Roman Empire, location.location.people_born_here, Augustine of Hippo
Baths of Diocletian, symbols.namesake.named_after, Diocletian
m.04z6xxv, military.military_combatant_group.combatants, Roman Empire
m.04yyx56, military.military_combatant_group.combatants, Roman Empire
m.04yynwh, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yyplz
m.048zsyf, military.military_combatant_group.combatants, Roman Empire
Roman Empire, location.location.people_born_here, Alexius of Rome
RomanEmpire large, common.image.appears_in_topic_gallery, Roman Empire
Roman Empire, book.book_subject.works, The Age of Constantine the Great
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
Roman Empire, military.military_combatant.military_conflicts, m.04yypd1
Diocletian, people.person.religion, Paganism
Diocletian, freebase.valuenotation.is_reviewed, Place of birth
Roman Empire, military.military_combatant.military_conflicts, m.04yynwh
The History of the Decline and Fall of the Roman Empire: Vol. 3, book.written_work.subjects, Roman Empire
m.048zz14, military.military_command.military_combatant, Roman Empire
m.0fs8d74, military.military_combatant_group.combatants, Roman Empire
m.0gf9wnr, royalty.system_title_relationship.system, Roman Empire
m.04yz542, military.military_combatant_group.combatants, Roman Empire
Roman Empire, common.topic.article, m.06cm_
Diocletian, freebase.valuenotation.is_reviewed, Date of death
Diocletian, fictional_universe.fictional_character.based_on, Diocletian
Baths of Diocletian, travel.travel_destination.tour_operators, Adventures by Disney - Italy Vacation
Roman Empire, military.military_combatant.military_conflicts, m.04yx36x
Roman Empire, military.military_combatant.military_conflicts, m.048zt3v
Roman Empire, common.topic.image, m.0291myr
m.04yynj8, military.military_combatant_group.combatants, Roman Empire
Roman Empire, book.book_subject.works, Centurion
Roman Empire, military.military_combatant.military_conflicts, m.048zsyf
Battle of the Margus, base.culturalevent.event.entity_involved, Diocletian
Publius Quinctilius Varus, people.person.place_of_birth, Roman Empire
Roman Empire, base.schemastaging.context_name.pronunciation, g.125_qw5d4
Roman Empire, military.military_combatant.military_conflicts, m.04yvn32
Roman Empire, military.military_combatant.military_conflicts, m.05cbwst
Augustine of Hippo, people.person.place_of_birth, Roman Empire
Roman Empire, location.location.people_born_here, g.11b62y00s2
m.04yyp76, military.military_combatant_group.combatants, Roman Empire
m.04yynht, military.military_combatant_group.combatants, Roman Empire
Diocletian, common.image.size, m.0klffq
Diocletian, common.topic.article, m.02d0w
First Dacian War, base.culturalevent.event.entity_involved, Roman Empire
Roman Empire, location.country.official_language, Latin Language
m.04yyp4d, military.military_combatant_group.combatants, Roman Empire
Diocletian, symbols.name_source.namesakes, Baths of Diocletian
The Robe, film.film.subjects, Roman Empire
Galeria Valeria, people.person.parents, Diocletian
Roman Empire, military.military_combatant.military_conflicts, m.0fs82dk
Maximilian, people.person.place_of_birth, Roman Empire
Paul I of Constantinople, people.person.place_of_birth, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04yypmf
Roman Empire, military.military_combatant.military_commanders, m.048zt4f
m.05prg15, military.military_combatant_group.combatants, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04z0r85
Diocletian's Palace, common.topic.article, m.05yvln
m.05cbwst, military.military_combatant_group.combatants, Roman Empire
Diocletian, people.person.nationality, Roman Empire
m.04yvn32, military.military_combatant_group.combatants, Roman Empire
m.04yvlvy, military.military_combatant_group.combatants, Roman Empire
Baths of Diocletian, common.topic.notable_types, Building
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.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04z212s
Eunomius of Cyzicus, people.person.place_of_birth, Roman Empire
The History of the Decline and Fall of the Roman Empire: Vol. 4, book.written_work.subjects, Roman Empire
Roman Empire, military.military_combatant.military_conflicts, m.04z0bs7

Answer: Roman emperor