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: The nation with Nigeria, We Hail Thee as its national anthem has which form of government currently? 
Knowledge Triplets: Presidential system, government.form_of_government.countries, Venezuela
Lyricist, freebase.type_hints.included_types, Topic
Musical Recording, freebase.type_profile.published, Published
South Korea, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Republic of Hawaii
Angola, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Pakistan
Composition, freebase.type_profile.published, Published
Presidential system, government.form_of_government.countries, Chile
Nigeria, We Hail Thee, music.composition.composer, Frances Berda
Nigeria, We Hail Thee, common.topic.notable_for, g.12ml082hv
Presidential system, government.form_of_government.countries, Maldives
Presidential system, government.form_of_government.countries, Turkmenistan
Federal republic, government.form_of_government.countries, Brazil
Presidential system, government.form_of_government.countries, Argentina
Presidential system, government.form_of_government.countries, Ecuador
Sudan, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Republic of the Congo
Presidential system, government.form_of_government.countries, Guinea
Kyrgyzstan, location.country.form_of_government, Presidential system
Nigeria, We Hail Thee, common.topic.notable_types, National Anthem
Nigeria, We Hail Thee, government.national_anthem.national_anthem_of, m.0w8ff8v
Seychelles, location.country.form_of_government, Presidential system
Yemen, location.country.form_of_government, Presidential system
Sudan, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Brazil
Liberia, location.country.form_of_government, Presidential system
West Germany, location.country.form_of_government, Federal republic
Keziah Jones, people.person.nationality, Nigeria
Presidential system, government.form_of_government.countries, Peru
Federal republic, government.form_of_government.countries, West Germany
National Anthem, freebase.type_hints.included_types, Composition
Second Polish Republic, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Russia
South Sudan, location.country.form_of_government, Presidential system
Musical Recording, freebase.type_hints.included_types, Topic
Iraq, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Seychelles
Costa Rica, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Tanzania
Weimar Republic, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Republic of Texas
Azerbaijan, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Gambia
Myanmar, location.country.form_of_government, Presidential system
Switzerland, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Yemen
Kenya, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Rwanda
Presidential system, government.form_of_government.countries, Azerbaijan
Nigeria, government.form_of_government.countries, Federal republic
Lyricist, freebase.type_profile.strict_included_types, Topic
Presidential system, government.form_of_government.countries, Guam
Federal republic, government.form_of_government.countries, Bosnia and Herzegovina
Presidential system, government.form_of_government.countries, Zambia
Nigeria, We Hail Thee, music.composition.recordings, Nigeria We Hail Thee
Presidential system, government.form_of_government.countries, Nagorno-Karabakh Republic
Presidential system, government.form_of_government.countries, Uzbekistan
Paraguay, location.country.form_of_government, Presidential system
National Anthem, freebase.type_profile.published, Published
Federal republic, government.form_of_government.countries, Argentina
Presidential system, government.form_of_government.countries, Tajikistan
Federal republic, government.form_of_government.countries, Weimar Republic
Nepal, location.country.form_of_government, Federal republic
Philippines, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Sudan
Czechoslovak Socialist Republic, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Equatorial Guinea
Armenia, location.country.form_of_government, Presidential system
Argentina, location.country.form_of_government, Federal republic
Federal republic, government.form_of_government.countries, Austria
Presidential system, government.form_of_government.countries, Paraguay
Presidential system, government.form_of_government.countries, Philippines
Nigeria, We Hail Thee, common.topic.article, m.0w7q9r3
Argentina, location.country.form_of_government, Presidential system
Mexico, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Mozambique
Presidential system, government.form_of_government.countries, Guatemala
Federal republic, base.ontologies.ontology_instance.equivalent_instances, m.07nhchw
Presidential system, government.form_of_government.countries, Uruguay
Kazakhstan, location.country.form_of_government, Presidential system
Republic of the Congo, location.country.form_of_government, Presidential system
Composer, freebase.type_profile.published, Published
Congo, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Kazakhstan
National Anthem, freebase.type_profile.strict_included_types, Topic
Presidential system, government.form_of_government.countries, Indonesia
Transnistria, location.country.form_of_government, Presidential system
Nigeria, We Hail Thee, government.national_anthem.national_anthem_of, m.0w8ff8v
Nagorno-Karabakh Republic, location.country.form_of_government, Presidential system
Peru, location.country.form_of_government, Presidential system
Frances Berda, common.topic.notable_types, Composer
Lyricist, freebase.type_profile.equivalent_topic, Lyricist
Presidential system, government.form_of_government.countries, Angola
Presidential system, government.form_of_government.countries, Colombia
Lillian Jean Williams, common.topic.notable_types, Lyricist
Federal republic, government.form_of_government.countries, Czechoslovak Socialist Republic
Confederate States of America, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Iran
m.0r1g7_q, dataworld.gardening_hint.last_referenced_by, Federal republic
Namibia, location.country.form_of_government, Presidential system
Republic of Texas, location.country.form_of_government, Presidential system
Lillian Jean Williams, people.person.nationality, United Kingdom
m.010vsw91, dataworld.gardening_hint.last_referenced_by, Presidential system
Nigeria We Hail Thee, music.recording.releases, Nigerian Wood
National Anthem, freebase.type_hints.included_types, Topic
m.07nhchw, base.ontologies.ontology_instance_mapping.freebase_topic, Federal republic
Musical Recording, freebase.type_profile.kind, Definition
Ecuador, location.country.form_of_government, Presidential system
Guam, location.country.form_of_government, Presidential system
Turkmenistan, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Nigeria
Presidential system, government.form_of_government.countries, Congo
National Anthem, type.type.domain, Government
Presidential system, government.form_of_government.countries, Panama
Nigeria We Hail Thee, music.recording.artist, Keziah Jones
El Salvador, location.country.form_of_government, Presidential system
Composer, freebase.type_hints.included_types, Topic
Presidential system, government.form_of_government.countries, Malawi
Nigeria, location.country.form_of_government, Federal republic
Marshall Islands, location.country.form_of_government, Presidential system
Somalia, location.country.form_of_government, Federal republic
Federal republic, government.form_of_government.countries, South Sudan
Chechen Republic of Ichkeria, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Nepal
Federal republic, government.form_of_government.countries, Ethiopia
Composition, freebase.type_hints.included_types, Topic
Composer, people.profession.corresponding_type, Composer
Bolivia, location.country.form_of_government, Presidential system
Composer, freebase.type_profile.equivalent_topic, Composer
Federal republic, government.form_of_government.countries, Germany
Eritrea, location.country.form_of_government, Presidential system
Lyricist, freebase.equivalent_topic.equivalent_type, Lyricist
Republic of Hawaii, location.country.form_of_government, Presidential system
Puntland, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Italian Social Republic
Federal republic, government.form_of_government.countries, Mexico
Composition, freebase.type_profile.kind, Definition
Frances Berda, common.topic.notable_for, g.12mk_lcpw
Presidential system, government.form_of_government.countries, First Spanish Republic
Presidential system, government.form_of_government.countries, United Arab Emirates
India, location.country.form_of_government, Federal republic
Composition, freebase.type_profile.strict_included_types, Topic
Nigeria, government.form_of_government.countries, Presidential system
Presidential system, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-9549
Panama, location.country.form_of_government, Presidential system
Palau, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Kenya
Bosnia and Herzegovina, location.country.form_of_government, Federal republic
Anthem, type.property.master_property, National anthem of
Anthem, rdf-schema#range, National Anthem
Nigeria, location.country.form_of_government, Presidential system
Maldives, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Federated States of Micronesia
Federal republic, government.form_of_government.countries, Czech and Slovak Federative Republic
Mozambique, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Liberia
Chad, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, United States of America
m.0w8ff8v, government.national_anthem_of_a_country.anthem, Nigeria, We Hail Thee
Nigeria We Hail Thee, common.topic.notable_types, Musical Recording
Presidential system, government.form_of_government.countries, Cyprus
Composer, freebase.equivalent_topic.equivalent_type, Composer
Musical Recording, freebase.type_profile.strict_included_types, Topic
Presidential system, government.form_of_government.countries, Chechen Republic of Ichkeria
French Second Republic, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Armenia
Germany, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Ghana
Pakistan, location.country.form_of_government, Federal republic
Italian Social Republic, location.country.form_of_government, Presidential system
National Anthem, type.type.properties, National anthem of
United Federations, fictional_universe.fictional_organization.type_of_organization, Federal republic
Federal republic, government.form_of_government.countries, Somalia
Comoros, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Uganda
Presidential system, government.form_of_government.countries, Belarus
Presidential system, government.form_of_government.countries, Gabon
Gambia, location.country.form_of_government, Presidential system
United Arab Emirates, location.country.form_of_government, Presidential system
Uzbekistan, location.country.form_of_government, Presidential system
Frances Berda, music.composer.compositions, Nigeria, We Hail Thee
Belarus, location.country.form_of_government, Presidential system
Northern Mariana Islands, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Bolivia
Presidential system, government.form_of_government.countries, United States of America
Presidential system, government.form_of_government.countries, Mexico
m.0w8ff8v, government.national_anthem_of_a_country.country, Nigeria
Guinea, location.country.form_of_government, Presidential system
Tanzania, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Sierra Leone
United States of America, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Republic of Afghanistan
Federal republic, government.form_of_government.countries, India
Colombia, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Sudan
Federal republic, government.form_of_government.countries, Socialist Federal Republic of Yugoslavia
Presidential system, government.form_of_government.countries, Palau
Czech and Slovak Federative Republic, location.country.form_of_government, Federal republic
National Anthem, freebase.type_profile.strict_included_types, Composition
Venezuela, location.country.form_of_government, Presidential system
Anthem, type.property.expected_type, National Anthem
National anthem, freebase.equivalent_topic.equivalent_type, National Anthem
Presidential system, government.form_of_government.countries, Eritrea
Presidential system, government.form_of_government.countries, Marshall Islands
Gabon, location.country.form_of_government, Presidential system
National Anthem, type.type.expected_by, Anthem
Nigeria We Hail Thee, music.recording.song, Nigeria, We Hail Thee
Federated States of Micronesia, location.country.form_of_government, Presidential system
Venezuela, location.country.form_of_government, Federal republic
Ivory Coast, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Costa Rica
Presidential system, government.form_of_government.countries, South Korea
Presidential system, government.form_of_government.countries, Nicaragua
Indonesia, location.country.form_of_government, Presidential system
National Anthem, freebase.type_profile.equivalent_topic, National anthem
Presidential system, government.form_of_government.countries, South Sudan
Lillian Jean Williams, music.lyricist.lyrics_written, Nigeria, We Hail Thee
Socialist Federal Republic of Yugoslavia, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Northern Mariana Islands
Ethiopia, location.country.form_of_government, Federal republic
Ghana, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Nigeria
Russia, location.country.form_of_government, Federal republic
National Anthem, freebase.type_profile.kind, Definition
Nigeria, We Hail Thee, music.composition.lyricist, Lillian Jean Williams
Presidential system, government.form_of_government.countries, Myanmar
Presidential system, base.schemastaging.context_name.pronunciation, g.125_ql64_
Presidential system, government.form_of_government.countries, French Second Republic
Presidential system, government.form_of_government.countries, Confederate States of America
Federal republic, government.form_of_government.countries, Switzerland
Tajikistan, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Kyrgyzstan
Nicaragua, location.country.form_of_government, Presidential system
Guatemala, location.country.form_of_government, Presidential system
Republic of Afghanistan, location.country.form_of_government, Presidential system
m.0w8ff8v, government.national_anthem_of_a_country.country, Nigeria
Frances Berda, people.person.profession, Composer
Cyprus, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Transnistria
Presidential system, government.form_of_government.countries, El Salvador
National Anthem, common.topic.article, m.03nbgmy
South Sudan, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Ivory Coast
Presidential system, government.form_of_government.countries, Algeria
Lillian Jean Williams, people.person.profession, Lyricist
Brazil, location.country.form_of_government, Federal republic
Brazil, location.country.form_of_government, Presidential system
Presidential system, government.form_of_government.countries, Puntland
Equatorial Guinea, location.country.form_of_government, Presidential system
Nigeria, location.country.national_anthem, m.0w8ff8v
Austria, location.country.form_of_government, Federal republic
Lyricist, freebase.type_profile.published, Published
Malawi, location.country.form_of_government, Presidential system
Uganda, location.country.form_of_government, Presidential system
Rwanda, location.country.form_of_government, Presidential system
Mexico, location.country.form_of_government, Federal republic
Presidential system, government.form_of_government.countries, Second Polish Republic
Composer, freebase.type_profile.strict_included_types, Topic
Presidential system, government.form_of_government.countries, Chad
Iran, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Venezuela
Federal republic, government.form_of_government.countries, Comoros
Sierra Leone, location.country.form_of_government, Presidential system
Topic, freebase.type_profile.published, Published
United States of America, location.country.form_of_government, Federal republic
Nigeria We Hail Thee, music.recording.tracks, Nigeria We Hail Thee
Algeria, location.country.form_of_government, Presidential system
Tanzania, location.country.form_of_government, Presidential system
Federal republic, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-d81e
First Spanish Republic, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Tanzania
Nigeria We Hail Thee, common.topic.notable_for, g.125d0zj13
Uruguay, location.country.form_of_government, Presidential system
Federal republic, government.form_of_government.countries, Iraq
Lillian Jean Williams, common.topic.notable_for, g.12mk_tmly
Presidential system, government.form_of_government.countries, Namibia
Chile, location.country.form_of_government, Presidential system
Zambia, location.country.form_of_government, Presidential system
Federal republic, fictional_universe.fictional_organization_type.organizations, United Federations

Answer: Presidential system
Federal republic