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 southwest academic conference conference is what type of conference? 
Knowledge Triplets: Academic conference, base.ontologies.ontology_class.equivalent_classes, m.05b7_8t
Academic conference, base.schemastaging.context_name.pronunciation, m.01315p5g
Southwest Academic Conference, conferences.conference_series.type_of_conference, Academic conference
m.05b7_8t, base.ontologies.ontology_class_mapping.freebase_topic, Academic conference
Academic conference, conferences.type_of_conference.conferences_of_this_type, Southwest Academic Conference
m.0w5_kbc, dataworld.gardening_hint.last_referenced_by, Academic conference
Academic conference, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0085-f9aa
Symposium on Principles of Programming Languages, conferences.conference_series.type_of_conference, Academic conference
Academic conference, conferences.type_of_conference.conferences_of_this_type, Symposium on Principles of Programming Languages

Answer: Academic conference