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: what form of government was practiced in sparta? 
Knowledge Triplets: Sparta, military.military_combatant.military_conflicts, m.04yvd46
m.04z2sqh, military.military_combatant_group.combatants, Sparta
Archaeological Museum of Sparta, common.topic.notable_for, g.1259dkd12
Aristocracy, common.topic.notable_types, Form of Government
m.0j_vs24, military.military_combatant_group.combatants, Sparta
m.04z88hn, military.military_combatant_group.combatants, Sparta
Sparta, common.topic.image, White County Courthouse in Sparta
Sparta, location.location.people_born_here, Callicrates of Sparta
Sparta, military.military_combatant.military_conflicts, m.04z0kht
Sparta, common.topic.image, Location of Sparta, Tennessee
Sparta, location.location.containedby, White County
m.04ywd5q, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.07lf7c6
Anaxandridas II, people.person.parents, Leon of Sparta
Sparta, military.military_combatant.military_conflicts, m.04yzb1c
Sparta, military.military_combatant.military_conflicts, m.04yvwhg
m.04z1j5t, military.military_combatant_group.combatants, Sparta
Sparta, location.statistical_region.population, m.0hkjfq7
Sparta, military.military_combatant.military_conflicts, m.04z2sr1
Sparta, military.military_combatant.military_conflicts, m.04yv3r9
m.04yvwtz, military.military_combatant_group.combatants, Sparta
Pelops of Sparta, people.person.gender, Male
m.04yyp8b, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.04ywd5q
m.04yv3r9, military.military_combatant_group.combatants, Sparta
Aristodemus of Sparta, common.topic.notable_types, Person Or Being In Fiction
Sparta, military.military_combatant.military_conflicts, m.052gv_z
Sparta, location.capital_of_administrative_division.capital_of, m.0jvvv9n
Sparta, location.statistical_region.population, m.0hl6vyr
m.04yvwth, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_commanders, m.02whxsh
Chionis of Sparta, common.topic.article, m.086cp9
Sparta, location.statistical_region.population, m.0hkq7jn
Sicilian Expedition, base.culturalevent.event.entity_involved, Sparta
Sparta, location.statistical_region.population, m.0hmcrr1
m.04ywd4n, military.military_combatant_group.combatants, Sparta
Cleomenes I, people.person.place_of_birth, Sparta
Sparta, location.location.geolocation, m.05d0z87
Sparta, military.military_combatant.military_conflicts, m.04yvwh8
Sparta, common.topic.notable_types, Country
Sparta, location.capital_of_administrative_division.capital_of, m.0jvw0n9
Sparta, symbols.name_source.namesakes, Sparta
Sparta, location.location.containedby, Tennessee
Sparta, location.location.containedby, Laconia
Sparta, common.topic.article, m.013d1c
Foreign War, base.culturalevent.event.entity_involved, Sparta
m.04z88hn, military.military_combatant_group.conflict, Siege of Sparta
Sparta, military.military_combatant.military_conflicts, m.04yyp84
Sparta, location.location.people_born_here, Agis IV
Sparta, military.military_combatant.military_conflicts, m.04ywd4n
Sparta, common.topic.article, m.0_xcj
Agis IV, people.person.place_of_birth, Sparta
Sparta, military.military_combatant.military_conflicts, m.04yvwn1
Sparta, location.location.people_born_here, Agis II
m.04yvd46, military.military_combatant_group.combatants, Sparta
m.03k_9z0, common.webpage.topic, Sparta
Sparta, location.location.geolocation, m.0kbj8w
m.04yyn35, military.military_combatant_group.combatants, Sparta
Lefty Stewart, people.person.place_of_birth, Sparta
Cleomenes I, people.person.nationality, Sparta
Sparta, military.military_combatant.military_conflicts, m.04y_3w2
m.04yvwh8, military.military_combatant_group.combatants, Sparta
Sparta, location.location.people_born_here, Cleomenes I
Sparta, location.statistical_region.population, m.0k6ptry
Sparta, military.military_combatant.military_conflicts, m.04ywx7l
Sparta, location.statistical_region.population, m.0hmcrtj
Sparta, location.location.contains, William G. and Anne Williams House
Gorgo, Queen of Sparta, common.topic.article, m.02pw_53
Sparta, location.country.official_language, Doric Greek
Sparta, common.topic.image, Sparti,situated in fertile valley of River Eurotas,flanked by Taygetos-Mountains
Sparta, location.location.containedby, Kent County
Sparta should be contained in some Greek prefecture., base.uncommon.exception.involves, Greek prefecture
University of the Peloponnese, Sparta Campus, common.topic.notable_for, g.1257k73yj
Monarchy, common.topic.notable_types, Form of Government
Sparta, location.location.containedby, Randolph County
m.04yywwc, military.military_combatant_group.combatants, Sparta
m.0j4k0qh, people.marriage.spouse, Gorgo, Queen of Sparta
Leon of Sparta, common.topic.notable_types, Politician
Sparta, location.statistical_region.population, m.0hmcrt9
Sparta, location.location.contains, Archaeological Museum of Sparta
Pelops of Sparta, common.topic.notable_for, g.125g_qkdh
Sparta, military.military_combatant.military_conflicts, m.0b78n9w
Sparta, location.country.form_of_government, Republic
Form of Government, type.property.schema, Country
Sparta Historic District, location.location.containedby, Georgia
Chionis of Sparta, common.topic.notable_types, Athlete
m.0jvw0n9, location.administrative_division_capital_relationship.capital, Sparta
Greece, base.uncommon.topic.exceptions, Sparta should be contained in some Greek prefecture.
Sparta, military.military_combatant.military_conflicts, m.04yzllf
m.04yvw97, military.military_combatant_group.combatants, Sparta
Leon of Sparta, people.person.parents, Eurycratides
Pleistoanax, people.person.children, Pausanias of Sparta
m.04z2sqs, military.military_combatant_group.combatants, Sparta
Sparta, location.location.people_born_here, Pausanias
Sparta, military.military_combatant.military_conflicts, m.04yyp8b
Sparta, military.military_combatant.military_conflicts, m.04yvryx
Sparta, military.military_combatant.military_conflicts, m.0cpk51h
Gorgo, Queen of Sparta, people.person.nationality, Greece
Leon of Sparta, people.person.place_of_birth, Sparta
A. D. Wilson, people.person.place_of_birth, Sparta
Sparta, location.statistical_region.population, m.0hkq7gn
Sparta, common.topic.article, m.02r15xq
Sparta, location.statistical_region.population, m.0hmcrr8
Sparta, common.topic.article, m.0947d
Third Sacred War, base.culturalevent.event.entity_involved, Sparta
m.04ywcwy, military.military_combatant_group.combatants, Sparta
Sparta, location.citytown.postal_codes, 49345
Leon of Sparta, common.topic.article, m.0fjvd1
Cleomenean War, base.culturalevent.event.entity_involved, Sparta
Pelops of Sparta, people.person.place_of_birth, Sparta
Sparta, location.country.form_of_government, Republic
Sparta, military.military_combatant.military_conflicts, m.04yvwtz
Young Spartans Exercising, visual_art.artwork.art_subject, Sparta
Sparta, common.topic.notable_for, g.125735tmg
Sparta, military.military_combatant.military_conflicts, m.04ywcwq
Peloponnesian War, base.culturalevent.event.entity_involved, Sparta
Sparta, location.hud_county_place.place, Sparta
m.04yyp84, military.military_combatant_group.combatants, Sparta
Sparta, location.location.events, Siege of Sparta
Sparta, location.location.people_born_here, Edgar Stillman Kelley
Sparta, common.topic.image, Alt text
Sparta Historic District, location.location.containedby, Sparta
m.03z96bp, military.military_combatant_group.combatants, Sparta
Sparta, government.form_of_government.countries, Diarchy
m.04yykh0, military.military_combatant_group.combatants, Sparta
Leotychidas, people.person.place_of_birth, Sparta
Sparta, travel.travel_destination.tourist_attractions, Archaeological Museum of Sparta
Sparta, location.statistical_region.population, m.0hl6vzd
Siege of Sparta, common.topic.article, m.04f22qg
Second Messenian War, base.culturalevent.event.entity_involved, Sparta
Siege of Sparta, base.culturalevent.event.entity_involved, Acrotatus II
Sparta, common.topic.notable_for, g.125bl_t02
University of the Peloponnese, Sparta Campus, common.topic.notable_types, Educational Institution Campus
White County, common.topic.image, White County Courthouse in Sparta
Leonidas I, people.person.place_of_birth, Sparta
Sparta, location.location.people_born_here, Chionis of Sparta
Republic, common.topic.notable_types, Form of Government
Form of Government, rdf-schema#range, Form of Government
Callicrates of Sparta, common.topic.article, m.07sb413
Sparta, location.citytown.postal_codes, 38583
Sparta, common.topic.webpage, m.04d4m37
Sparta, military.military_combatant.military_conflicts, m.04yywwc
Pelops of Sparta, common.topic.notable_types, Deceased Person
Sparta, common.topic.image, Map of Greece, position of Elaiochori highlighted
m.0wlh6t9, people.place_lived.location, Sparta
Gorgo, Queen of Sparta, people.person.place_of_birth, Sparta
Callicrates of Sparta, common.topic.notable_types, Deceased Person
m.04y_3w2, military.military_combatant_group.combatants, Sparta
Sparta should be contained in some Greek prefecture., base.uncommon.exception.focus, Sparta
Sparta, base.uncommon.topic.exceptions, Sparta should be contained in some Greek prefecture.
Chremonidean War, base.culturalevent.event.entity_involved, Sparta
Sparta, location.statistical_region.population, m.0k6sfp9
Sparta should be contained in some Greek prefecture., base.uncommon.exception.involves, Greece
Sparta, common.topic.notable_types, Administrative Division
Sparta, common.topic.notable_for, g.125f8rvlm
Sparta, military.military_combatant.military_conflicts, m.04z88hn
Sparta, location.statistical_region.population, m.011v580n
Sparta, military.military_combatant.casualties, m.02whxrg
m.04yvx5x, military.military_combatant_group.combatants, Sparta
Archaeological Museum of Sparta, location.location.containedby, Sparta
Gorgo, Queen of Sparta, people.person.nationality, Sparta
Sparta, location.location.contains, University of the Peloponnese, Sparta Campus
Sparta, military.military_combatant.military_conflicts, m.04yvr04
m.0q3bq2w, location.administrative_division_capital_relationship.capital, Sparta
m.04z0r11, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.04yz8f1
Leon of Sparta, common.topic.notable_for, g.125cx_ls2
m.04ywcwq, military.military_combatant_group.combatants, Sparta
Sparta, common.topic.image, Bicycling Capital of America
James W. Throckmorton, people.person.place_of_birth, Sparta
Sparta should be contained in some Greek prefecture., base.uncommon.exception.rule, Every Administrative Area must be contained in an appropriate Administrative Area.
Sparta, visual_art.art_subject.artwork_on_the_subject, Young Spartans Exercising
Sparta, military.military_combatant.military_conflicts, m.04yxrng
m.04ywd5b, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.04ywd5b
m.04yxwm3, military.military_combatant_group.combatants, Sparta
m.04yymrm, military.military_combatant_group.combatants, Sparta
Panagiotis Trivoulidas, people.person.place_of_birth, Sparta
Diarchy, government.form_of_government.countries, Sparta
m.04yzllf, military.military_combatant_group.combatants, Sparta
Sparta, location.location.containedby, Illinois
Monroe County, location.location.contains, Sparta
Sparta, common.topic.image, White-county-courthouse-tn2
Sparta, military.military_combatant.military_conflicts, m.03z96bp
Pelops of Sparta, common.topic.article, m.0gys8zb
Sparta, military.military_combatant.military_conflicts, m.04yxwm3
Sparta, military.military_combatant.military_conflicts, m.04yvwth
Sparta, location.statistical_region.population, m.04m0syw
m.052gv_z, military.military_combatant_group.combatants, Sparta
Sparta, location.location.contains, Sparta Historic District
Chionis of Sparta, people.person.place_of_birth, Sparta
m.04yzww2, military.military_combatant_group.combatants, Sparta
White County, location.location.contains, Sparta
Chionis of Sparta, people.person.gender, Male
Sparta, military.military_combatant.military_conflicts, m.04z2sqs
Archaeological Museum of Sparta, common.topic.notable_types, Museum
Pelops of Sparta, people.person.parents, Lykourgos
Greco-Persian Wars, base.culturalevent.event.entity_involved, Sparta
Sparta, location.statistical_region.population, m.0hmcrpy
Gorgo, Queen of Sparta, people.person.children, Pleistarchus
m.04yz1j2, military.military_combatant_group.combatants, Sparta
Sparta, location.location.geolocation, m.0kgzbg
m.04z0kht, military.military_combatant_group.combatants, Sparta
Greek municipality, base.uncommon.topic.exceptions, Sparta should be contained in some Greek prefecture.
Chionis of Sparta, common.topic.notable_for, g.125by8hlx
Sparta, location.statistical_region.population, m.0hl6vyj
Sparta, location.statistical_region.population, g.11x1cs34y
m.04ywx7l, military.military_combatant_group.combatants, Sparta
Sparta, location.statistical_region.population, m.0hkq7j6
Sparta, common.topic.notable_types, City/Town/Village
Sparta, base.wikipedia_infobox.settlement.area_code, Area code 859
David Culley, people.person.place_of_birth, Sparta
Cleomenes I, people.person.children, Gorgo, Queen of Sparta
Sparta, location.location.contains, St. John's Episcopal Church
m.04yyn0t, military.military_combatant_group.combatants, Sparta
Archaeological Museum of Sparta, common.topic.article, m.043q6jn
Sparta, location.statistical_region.population, m.0hl6vz5
m.0jvw3jp, location.administrative_division_capital_relationship.capital, Sparta
m.02whxrg, military.casualties.combatant, Sparta
Sparta, common.topic.notable_for, g.1258d7btr
Sparta, base.wikipedia_infobox.settlement.area_code, Area code 931
m.04z2sr1, military.military_combatant_group.combatants, Sparta
m.04yxrng, military.military_combatant_group.combatants, Sparta
Sparta Historic District, location.location.containedby, United States of America
Sparta, location.location.contains, Monroe County Museum
Alexandros Theofilakis, people.person.place_of_birth, Sparta
Sparta, common.topic.webpage, m.03k_9z0
Agesilaus II, people.person.place_of_birth, Sparta
Sparta, location.statistical_region.population, m.0hmcrqm
Cretan War (205–200 BC), base.culturalevent.event.entity_involved, Sparta
Cleomenes III, people.person.place_of_birth, Sparta
m.04yw5k1, military.military_combatant_group.combatants, Sparta
Sparta, location.country.form_of_government, Diarchy
Eudamidas II, people.person.place_of_birth, Sparta
Sparta, location.location.contains, Sparta Free Library
Siege of Sparta, military.military_conflict.combatants, m.05nsnsv
Sparta, location.location.people_born_here, Pantites
Sparta, location.statistical_region.population, m.0jtl8nb
Pantites, people.person.nationality, Sparta
Sparta, military.military_combatant.military_conflicts, m.04ywd4y
Sparta, common.topic.notable_for, g.125734yw4
m.07lf7c6, military.military_combatant_group.combatants, Sparta
Sparta, location.location.containedby, United States of America
Pleistoanax, people.person.place_of_birth, Sparta
Sparta, location.citytown.postal_codes, 23100
Sparta, location.location.geolocation, m.0kj3hb
Leon of Sparta, people.person.gender, Male
Sparta, military.military_combatant.military_conflicts, m.04yzww2
Siege of Sparta, military.military_conflict.combatants, m.04z88hn
Sparta, common.topic.image, Location of Sparta within Michigan
Sparta, location.location.geolocation, m.0ghd09p
Sparta, location.statistical_region.population, m.0w0dzmt
Sparta, location.statistical_region.population, m.0hkq7lp
Ioannis Theofilakis, people.person.place_of_birth, Sparta
m.0jvvv9n, location.administrative_division_capital_relationship.capital, Sparta
Alt text, common.image.appears_in_topic_gallery, Sparta
Sparta, military.military_combatant.military_conflicts, m.04z0r11
Sparta, location.statistical_region.population, m.0hl6vzm
Sparta, location.country.capital, Sparta
Battle of Arginusae, base.culturalevent.event.entity_involved, Sparta
Sparta, location.statistical_region.population, m.0hl6vy8
Sparta, location.statistical_region.population, g.11b66hsslq
Aristocracy, government.form_of_government.countries, Sparta
Callicrates of Sparta, people.person.place_of_birth, Sparta
Sparta, location.statistical_region.population, m.0hmcrt2
Sparta, location.location.containedby, Michigan
m.04yvryx, military.military_combatant_group.combatants, Sparta
Sparta, symbols.namesake.named_after, Sparta
Pleistarchus, people.person.place_of_birth, Sparta
Sparta, location.location.geolocation, m.0kct7v
Sparta, military.military_combatant.military_conflicts, m.07y5bp6
Pausanias, people.person.place_of_birth, Sparta
Aristodemus of Sparta, common.topic.notable_for, g.125817bvr
Sparta, military.military_combatant.military_conflicts, m.04z1j5t
Sparta, location.location.containedby, Greece
Sparta, common.topic.article, m.0kk94
Eudamidas II, people.person.nationality, Sparta
Sparta, military.military_combatant.military_conflicts, m.04yykh0
Sparta, military.military_combatant.military_conflicts, m.04y_43t
Sparta, location.statistical_region.population, m.0k6ntj3
Sparta, military.military_combatant.military_conflicts, m.04yvtwp
Sparta, location.citytown.postal_codes, 41086
m.04yz8f1, military.military_combatant_group.combatants, Sparta
Sparta, location.statistical_region.population, m.0hmcrp8
Sparta, common.topic.notable_for, g.1254_4495
Gorgo, Queen of Sparta, people.person.spouse_s, m.0j4k0qh
Sparta, common.topic.webpage, m.03lbgzv
Sparta, location.statistical_region.population, m.0hkq7hs
Sparta, location.statistical_region.population, m.0hmcrq5
Aristodemus of Sparta, people.person.place_of_birth, Sparta
Sparta, location.capital_of_administrative_division.capital_of, m.0jvw3jp
Gorgo, Queen of Sparta, common.topic.article, m.0252pk_
Sparta, location.location.people_born_here, Cleomenes III
Mytilenean revolt, base.culturalevent.event.entity_involved, Sparta
Siege of Sparta, base.culturalevent.event.entity_involved, Sparta
Diarchy, common.topic.notable_types, Form of Government
Gorgo, Queen of Sparta, common.topic.notable_for, g.125dysc9f
Gorgo, Queen of Sparta, people.person.parents, Cleomenes I
Sparta, location.country.form_of_government, Monarchy
Sparta, military.military_combatant.military_conflicts, m.04ywcwy
Form of Government, rdf-schema#domain, Country
Aristodemus of Sparta, people.person.gender, Male
m.04ywd4b, military.military_combatant_group.combatants, Sparta
m.04yvwhg, military.military_combatant_group.combatants, Sparta
Form of Government, type.property.expected_type, Form of Government
Sparta, military.military_combatant.military_conflicts, m.04yw5k1
Sparta, common.topic.notable_for, g.1256jqb5n
m.04yvr04, military.military_combatant_group.combatants, Sparta
m.04yzrbz, military.military_combatant_group.combatants, Sparta
m.04y_43t, military.military_combatant_group.combatants, Sparta
Sparta, common.topic.image, Location of Sparta, Georgia
Sparta, location.location.geolocation, m.0kd6gk
m.04yvwn1, military.military_combatant_group.combatants, Sparta
Sparta, location.location.containedby, Georgia
Pantites, people.person.place_of_birth, Sparta
Sparta, location.capital_of_administrative_division.capital_of, m.0q3bq2w
Sparta, location.administrative_division.third_level_division_of, Greece
Sparta, base.wikipedia_infobox.settlement.area_code, Area code 616
Sparta, military.military_combatant.military_conflicts, m.04yvx5x
Lykourgos-Stefanos Tsakonas, people.person.place_of_birth, Sparta
Teleutias, people.person.place_of_birth, Sparta
Sparta, military.military_combatant.military_conflicts, m.04ywd4b
Sparta, military.military_combatant.military_conflicts, m.04z2wsh
Sparta, location.country.form_of_government, Aristocracy
m.02whxsh, military.military_command.military_combatant, Sparta
m.04z2wsh, military.military_combatant_group.combatants, Sparta
Sparta, location.location.geolocation, m.0kc01h
Sparta, freebase.valuenotation.is_reviewed, Time zone(s)
Sparta Historic District, location.location.containedby, Illinois
m.04d4m37, common.webpage.topic, Sparta
Sparta, location.location.people_born_here, Eudamidas II
Sparta, location.location.containedby, Gallatin County
Sparta should be contained in some Greek prefecture., base.uncommon.exception.force, Categorical
Sparta should be contained in some Greek prefecture., base.uncommon.exception.involves, Sparta
Sparta should be contained in some Greek prefecture., base.uncommon.exception.involves, Greek municipality
m.04ywd4y, military.military_combatant_group.combatants, Sparta
Aristodemus of Sparta, common.topic.article, m.05vpgb
Sparta, location.statistical_region.population, m.0k6pts4
Archaeological Museum of Sparta, architecture.museum.type_of_museum, Archaeological Museum
m.03lbgzv, common.webpage.topic, Sparta
Callicrates of Sparta, common.topic.notable_for, g.125658ks3
Sparta, military.military_combatant.military_conflicts, m.04yvw97
Sparta, common.topic.image, KYMap-doton-Sparta
m.07y5bp6, military.military_combatant_group.combatants, Sparta
University of the Peloponnese, Sparta Campus, location.location.containedby, Sparta
m.04yvpjg, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.04yz1j2
m.04yzb1c, military.military_combatant_group.combatants, Sparta
Sparta, location.location.containedby, Monroe County
Sparta, government.form_of_government.countries, Aristocracy
Sparta, location.location.containedby, Hancock County
Sparta, base.aareas.schema.administrative_area.administrative_area_type, Greek municipality
Sparta, military.military_combatant.military_conflicts, m.04yymrm
Sparta, location.location.people_born_here, Pleistarchus
Siege of Sparta, common.topic.notable_for, g.1259f0zqj
Sparta, location.location.containedby, Kentucky
Sparta, location.statistical_region.population, m.0hkjfr4
m.0cpk51h, military.military_combatant_group.combatants, Sparta
Sparta, location.statistical_region.population, m.0hkq7kk
Battle of Rhium, base.culturalevent.event.entity_involved, Sparta
Gorgo, Queen of Sparta, people.person.gender, Female
Sparta, military.military_combatant.military_conflicts, m.04yvpjg
Sparta, common.topic.article, m.0v9w6
Sparta, common.topic.article, m.01mm4g
Agis II, people.person.place_of_birth, Sparta
Sparta should be contained in some Greek prefecture., base.uncommon.exception.status, Open
Sparta, military.military_combatant.military_conflicts, m.04z2sqh
Siege of Sparta, common.topic.notable_types, Military Conflict
Sparta, location.statistical_region.population, m.0hkq7h9
Sparta, common.topic.notable_for, g.125b9fny1
Sparta, location.location.people_born_here, Notis Peryalis
Sparta, military.military_combatant.military_conflicts, m.04yyn35
Aristodemus of Sparta, people.person.nationality, Greece
Sparta, common.topic.article, m.0sf_k
Sparta, military.military_combatant.military_conflicts, m.04yyn0t
First Macedonian War, base.culturalevent.event.entity_involved, Sparta
Sparta, base.ontologies.ontology_instance.equivalent_instances, m.07ng1lf
Leon of Sparta, people.person.children, Anaxandridas II
Sparta, common.topic.article, m.0rx48
Second Persian invasion of Greece, base.culturalevent.event.entity_involved, Sparta
Sparta, location.country.form_of_government, Monarchy
Sparta, military.military_combatant.military_conflicts, m.04yzrbz
m.04yvtwp, military.military_combatant_group.combatants, Sparta
Sparta, location.location.containedby, Wisconsin
Sparta, location.statistical_region.population, g.11bc85z14f
Aristodemus of Sparta, people.person.nationality, Sparta
Greek prefecture, base.uncommon.topic.exceptions, Sparta should be contained in some Greek prefecture.
Aristocracy, government.form_of_government.countries, Roman Republic
m.07ng1lf, base.ontologies.ontology_instance_mapping.freebase_topic, Sparta
m.0b78n9w, military.military_combatant_group.combatants, Sparta
Sparta, military.military_combatant.military_conflicts, m.0j_vs24

Answer: Monarchy
Aristocracy
Diarchy
Republic