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 national anthem Burundi Bwacu is from what country? 
Knowledge Triplets: National Anthem, freebase.type_hints.included_types, Topic
Human Language, freebase.type_profile.kind, Definition
Rundi, base.rosetta.local_name.languoid, Kirundi language
Kirundi language, language.human_language.language_family, Benue–Congo languages
Burundi Bwacu, common.topic.notable_for, g.1255s3_9g
Kirundi language, base.rosetta.languoid.languoid_class, Language
National anthem, freebase.equivalent_topic.equivalent_type, National Anthem
Rundi, base.rosetta.rosetta_document.refers_to, Kirundi language
Burundi: Burundi Bwâcu, music.recording.releases, National Anthems, Volume 1
Marc Barengayabo, music.composer.compositions, Burundi Bwacu
Kirundi language, base.rosetta.languoid.document, Rundi
National Anthem, freebase.type_profile.equivalent_topic, National anthem
m.0h_386d, government.national_anthem_of_a_country.anthem, Burundi Bwacu
Kirundi language, language.human_language.language_family, Bantoid languages
Composition, freebase.type_profile.kind, Definition
Bantu languages, language.language_family.member_of_language_families, Benue–Congo languages
Burundi Bwacu, common.topic.notable_types, National Anthem
Niger–Congo languages, language.language_family.geographic_distribution, Africa
Rundi, base.rosetta.local_name.locale, Burundi
Burundi Bwacu, common.topic.article, m.01l8dm
Human Language, freebase.type_profile.published, Published
Niger–Congo languages, language.language_family.sub_families, Bantu languages
Burundi: Burundi Bwâcu, common.topic.notable_for, g.126sp1nv0
Benue–Congo languages, language.language_family.sub_families, Bantu languages
m.0h_386d, government.national_anthem_of_a_country.country, Burundi
Burundi Bwacu, music.composition.composer, Marc Barengayabo
Marc Barengayabo, common.topic.notable_for, g.1255l0_l7
Burundi: Burundi Bwâcu, music.recording.song, Burundi Bwacu
National Anthem, type.type.domain, Government
Burundi Bwacu, music.composition.recordings, Burundi: Burundi Bwâcu
National Anthem, type.type.properties, National anthem of
Burundi: Burundi Bwâcu, music.recording.artist, Marc Barengayabo
Rundi Genesis Translation, base.rosetta.rosetta_document.refers_to, Kirundi language
Kirundi language, language.human_language.language_family, Bantu languages
Human Language, freebase.type_hints.included_types, Topic
Composition, freebase.type_profile.strict_included_types, Topic
Kirundi language, base.rosetta.languoid.parent, Rwanda-Rundi (J.60) Group
Burundi: Burundi Bwâcu, music.recording.tracks, Burundi: Burundi Bwâcu
Kirundi language, base.rosetta.languoid.local_name, Rundi
Kirundi language, language.human_language.main_country, Burundi
National Anthem, freebase.type_profile.kind, Definition
Rwanda-Rundi (J.60) Group, base.rosetta.languoid.child, Kirundi language
Burundi, location.location.containedby, Africa
Bantoid languages, language.language_family.sub_families, Bantu languages
Bantu languages, language.language_family.member_of_language_families, Bantoid languages
Anthem, type.property.expected_type, National Anthem
Musical Artist, freebase.type_hints.included_types, Topic
National Anthem, common.topic.article, m.03nbgmy
Burundi Bwacu, music.composition.language, Kirundi language
Musical Recording, freebase.type_hints.included_types, Topic
Burundi: Burundi Bwâcu, common.topic.notable_types, Musical Recording
Anthem, type.property.master_property, National anthem of
Kirundi language, language.human_language.language_family, Niger–Congo languages
Burundi, location.country.national_anthem, m.0h_386d
Kirundi language, language.human_language.region, Africa
Musical Recording, freebase.type_profile.published, Published
Burundi, base.locations.countries.continent, Africa
Burundi Bwacu, government.national_anthem.national_anthem_of, m.0h_386d
National Anthem, freebase.type_profile.published, Published
Musical Artist, freebase.type_profile.strict_included_types, Topic
National Anthem, type.type.expected_by, Anthem
Anthem, rdf-schema#range, National Anthem
Human Language, freebase.type_profile.strict_included_types, Topic
Africa, base.locations.continents.countries_within, Burundi
Bantu languages, language.language_family.languages, Kirundi language
Burundi Bwacu, music.composition.language, Kirundi language
Musical Recording, freebase.type_profile.kind, Definition
Benue–Congo languages, language.language_family.sub_families, Bantoid languages
Kirundi language, base.rosetta.languoid.document, Rundi Genesis Translation
National Anthem, freebase.type_profile.strict_included_types, Topic
Kirundi language, common.topic.article, m.020gsk
Bantoid languages, language.language_family.member_of_language_families, Benue–Congo languages
Kirundi language, common.topic.notable_types, Human Language
Burundi, location.country.official_language, Kirundi language
Bantoid languages, language.language_family.languages, Kirundi language
Musical Artist, freebase.type_profile.published, Published
Composition, freebase.type_hints.included_types, Topic
Marc Barengayabo, common.topic.notable_types, Musical Artist
Bantu languages, language.language_family.member_of_language_families, Niger–Congo languages
Topic, freebase.type_profile.published, Published
Kirundi language, common.topic.notable_for, g.125bxswj8
National Anthem, freebase.type_hints.included_types, Composition
Composition, freebase.type_profile.published, Published
National Anthem, freebase.type_profile.strict_included_types, Composition
Kirundi language, language.human_language.region, Africa
Marc Barengayabo, music.artist.track, Burundi: Burundi Bwâcu
Musical Recording, freebase.type_profile.strict_included_types, Topic

Answer: Africa