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

Answer: Mwinilunga