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: what are the sponsors of africa singapore business forum? 
Knowledge Triplets: International Enterprise Singapore, conferences.conference_sponsor.conferences, Africa Singapore Business Forum
International Enterprise Singapore, organization.organization.date_founded, 1983
Africa Singapore Business Forum, conferences.conference_series.sponsoring_organization, International Enterprise Singapore
Africa Singapore Business Forum, time.recurring_event.date_of_first_occurance, 2010
Africa Singapore Business Forum, conferences.conference_sponsor.conferences, International Enterprise Singapore

Answer: International Enterprise Singapore