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: Who is the star of the film that has a character named Retreat Kid? 
Knowledge Triplets: Simon Birch, film.film.starring, m.0k39m5
Film character, common.topic.article, m.02_96_z
Retreat Kid, common.topic.notable_types, Film character
m.0k39m5, film.performance.actor, Ian Michael Smith
Fictional Character, freebase.type_profile.published, Published
Fictional Character, freebase.type_hints.included_types, Topic
Simon Birch, film.film.starring, m.0v9q9j7
Film character, type.type.properties, Portrayed in films (dubbed)
Film, type.domain.types, Film character
Fictional Character, freebase.type_profile.strict_included_types, Topic
Film character, freebase.type_profile.strict_included_types, Topic
m.0v9q9j7, film.performance.film, Simon Birch
Film character, freebase.type_profile.kind, Portrayal
Film character, freebase.type_profile.kind, Annotation
m.0k39m5, film.actor.film, Ian Michael Smith
m.0v9q9j7, film.performance.actor, Aaron Bouffard
Film character, freebase.type_hints.included_types, Fictional Character
m.0k39m5, film.performance.character, Simon Birch
Character, owl#inverseOf, Portrayed in films
Film character, type.type.expected_by, Killed by
Film character, freebase.type_profile.strict_included_types, Fictional Character
Retreat Kid, common.topic.notable_for, g.12h2vph1v
Ian Michael Smith, film.actor.film, m.0k39m5
Film character, type.type.properties, Portrayed in films
m.0k39m5, film.performance.film, Simon Birch
Film character, type.type.expected_by, Other conquests
Simon Birch, film.film_character.portrayed_in_films, m.0k39m5
Aaron Bouffard, film.actor.film, m.0v9q9j7
Simon Birch, common.topic.notable_for, g.125fww29x
Retreat Kid, film.film_character.portrayed_in_films, m.0v9q9j7
Film character, common.topic.notable_types, Simon Birch
m.0v9q9j7, film.performance.special_performance_type, Uncredited
Character, type.property.reverse_property, Portrayed in films
Fictional Character, freebase.type_profile.kind, Portrayal
Character, type.property.expected_type, Film character
Topic, freebase.type_profile.kind, Portrayal
m.0v9q9j7, film.performance.film, Simon Birch
Simon Birch, film.film_character.portrayed_in_films, m.0k39m5
Film character, type.type.expected_by, Character using Wham-O product
Simon Birch, common.topic.notable_types, Film character
Film character, freebase.type_hints.included_types, Topic
Film character, freebase.type_profile.published, Published
Film character, type.type.expected_by, Character
Film character, type.type.domain, Film
Character, rdf-schema#range, Film character
Retreat Kid, film.film_character.portrayed_in_films, m.0v9q9j7
Retreat Kid, common.topic.notable_types, Film character
m.0v9q9j7, film.performance.character, Retreat Kid
Topic, freebase.type_profile.published, Published

Answer: Ian Michael Smith