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 locomotives have a class of mark vii monorail? 
Knowledge Triplets: Mark VII monorail, rail.locomotive_class.locomotives_of_this_class, Mark VII monorail Red
m.0tq1nc7, dataworld.gardening_hint.last_referenced_by, m.0t6f5z1
Mark VII monorail Orange, rail.locomotive.locomotive_class, Mark VII monorail
m.0t6f5z1, type.object.permission, m.019h
Mark VII monorail Blue, rail.locomotive.locomotive_class, Mark VII monorail
Mark VII monorail, rail.locomotive_class.introduced, 2008
m.019h, type.permission.controls, m.0t6f5z1
Mark VII monorail, rail.locomotive_class.locomotives_of_this_class, Mark VII monorail Blue
Mark VII monorail, rail.locomotive_class.locomotives_of_this_class, Mark VII monorail Orange
m.0t6f5z1, dataworld.gardening_hint.last_referenced_by, Mark VII monorail
Mark VII monorail Red, rail.locomotive.locomotive_class, Mark VII monorail

Answer: Mark VII monorail Red
Mark VII monorail Blue
Mark VII monorail Orange