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 river that flows through Songo, Mozambique originates where? 
Knowledge Triplets: Significant, freebase.type_kind.types, City/Town/Village
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011jt74t
Location, type.type.domain, Location
City/Town/Village, type.type.properties, Postal codes
City/Town/Village, base.descriptive_names.names.descriptive_name, m.012_976x
Dated location, freebase.type_profile.strict_included_types, Abstract
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckk64
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011nr3__
City/Town/Village, base.descriptive_names.names.descriptive_name, m.0105y_05
Location, freebase.type_profile.strict_included_types, Inanimate
Location, freebase.type_profile.published, Published
Dated location, type.type.domain, Location
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h51y0
City/Town/Village, freebase.type_profile.equivalent_topic, Village
City/Town/Village, base.descriptive_names.names.descriptive_name, m.012w3hyx
Location, freebase.type_hints.included_types, Topic
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011nbp0r
Statistical region, freebase.type_profile.published, Published
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010kkbfd
Statistical region, freebase.type_profile.strict_included_types, Location
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010rnll5
Statistical region, freebase.type_profile.strict_included_types, Inanimate
City/Town/Village, freebase.type_profile.kind, Definition
Town, freebase.equivalent_topic.equivalent_type, City/Town/Village
City/Town/Village, base.descriptive_names.names.descriptive_name, m.0114s4js
City/Town/Village, freebase.type_profile.strict_included_types, Statistical region
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011m57bw
City/Town/Village, base.descriptive_names.names.descriptive_name, m.0111t6vw
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h51yy
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h5200
Dated location, freebase.type_profile.published, Published
Topic, freebase.type_profile.published, Published
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011lvjc_
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010kk9vk
City/Town/Village, freebase.type_profile.published, Published
Statistical region, freebase.type_hints.included_types, Topic
City/Town/Village, freebase.type_profile.strict_included_types, Location
City/Town/Village, freebase.type_profile.strict_included_types, Agent
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h51_h
Songo, Mozambique, common.topic.notable_types, City/Town/Village
Dated location, freebase.type_profile.strict_included_types, Location
Postal codes, rdf-schema#domain, City/Town/Village
Statistical region, freebase.type_profile.strict_included_types, Abstract
Dated location, freebase.type_profile.strict_included_types, Topic
City/Town/Village, freebase.type_profile.kind, Significant
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011jt6z3
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011x4lp6
City/Town/Village, freebase.type_hints.included_types, Statistical region
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckj_k
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011m9jg_
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011c38cw
Dated location, freebase.type_hints.included_types, Location
City/Town/Village, freebase.type_profile.strict_included_types, Topic
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011jtngz
City/Town/Village, type.type.properties, City Limits
City/Town/Village, freebase.type_profile.strict_included_types, Inanimate
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011f9yg3
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckjwd
City/Town/Village, freebase.type_profile.strict_included_types, Dated location
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h51zj
Statistical region, freebase.type_profile.strict_included_types, Topic
City/Town/Village, freebase.type_profile.strict_included_types, Abstract
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckkfd
City Limits, rdf-schema#domain, City/Town/Village
Statistical region, freebase.type_hints.included_types, Location
City, freebase.equivalent_topic.equivalent_type, City/Town/Village
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011vl2ss
City/Town/Village, type.type.domain, Location
City Limits, type.property.schema, City/Town/Village
City/Town/Village, freebase.type_hints.included_types, Location
Postal codes, type.property.schema, City/Town/Village
City/Town/Village, base.descriptive_names.names.descriptive_name, m.012z3l2r
City/Town/Village, base.descriptive_names.names.descriptive_name, m.012_74vb
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckk2n
City/Town/Village, freebase.type_profile.equivalent_topic, Town
City/Town/Village, base.descriptive_names.names.descriptive_name, m.0111t6pl
City/Town/Village, freebase.type_hints.included_types, Dated location
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckjv4
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011ckjyy
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010h51x5
Songo, Mozambique, common.topic.notable_for, g.125h68v6f
City/Town/Village, freebase.type_profile.equivalent_topic, City
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010kkbry
Statistical region, type.type.domain, Location
Dated location, freebase.type_hints.included_types, Topic
City/Town/Village, base.descriptive_names.names.descriptive_name, m.010r12s4
Village, freebase.equivalent_topic.equivalent_type, City/Town/Village
Dated location, freebase.type_profile.strict_included_types, Inanimate
City/Town/Village, base.descriptive_names.names.descriptive_name, m.011tz0b1
City/Town/Village, common.topic.article, m.03bnd2c
City/Town/Village, freebase.type_hints.included_types, Topic

Answer: Mwinilunga