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 are the mother and father of the actor who portrayed Girl in Fountain Line? 
Knowledge Triplets: Jules Mann-Stewart, film.writer.film, K-11
Film character, type.type.expected_by, Character using Wham-O product
Jules Mann-Stewart, people.person.gender, Female
Character, owl#inverseOf, Portrayed in films
John Stewart, people.person.gender, Male
Cameron Stewart, people.person.parents, John Stewart
m.0gww8d_, film.performance.character, Girl in Fountain Line
Film character, freebase.type_profile.kind, Annotation
m.0gww8d_, film.actor.film, Kristen Stewart
Jules Mann-Stewart, people.person.ethnicity, English Australian
Film character, freebase.type_hints.included_types, Fictional Character
m.0hjb23x, education.education.student, Jules Mann-Stewart
Film character, freebase.type_profile.strict_included_types, Topic
Character, type.property.expected_type, Film character
Screenwriter, people.profession.people_with_this_profession, Jules Mann-Stewart
Jules Mann-Stewart, people.person.profession, Film Editor
Stage Manager, people.profession.people_with_this_profession, John Stewart
Film character, type.type.properties, Portrayed in films (dubbed)
Film character, type.type.expected_by, Character
Film character, freebase.type_hints.included_types, Topic
m.0gww8d_, film.performance.film, The Thirteenth Year
m.0gww8d_, film.performance.actor, Kristen Stewart
Girl in Fountain Line, film.film_character.portrayed_in_films, m.0gww8d_
John Stewart, people.person.children, Dana Stewart
Fictional Character, freebase.type_hints.included_types, Topic
John Stewart, people.person.spouse_s, m.0j4jpxq
Film character, type.type.domain, Film
Cameron Stewart, people.person.parents, Jules Mann-Stewart
m.0y7s53j, award.award_nomination.award_nominee, John Stewart
Dana Stewart, people.person.parents, Jules Mann-Stewart
Jules Mann-Stewart, people.person.education, m.0hjb23x
Film character, type.type.properties, Portrayed in films
Taylor Stewart, people.person.parents, Jules Mann-Stewart
m.0j4jpxq, people.marriage.spouse, John Stewart
Jules Mann-Stewart, people.person.profession, Screenwriter
John Stewart, people.person.profession, Stage Manager
John Stewart, people.person.children, Kristen Stewart
John Stewart, people.person.children, Taylor Stewart
Jules Mann-Stewart, people.person.nationality, Australia
Film character, common.topic.article, m.02_96_z
Kristen Stewart, film.actor.film, m.0gww8d_
John Stewart, imdb.topic.name_id, nm0829522
Kristen Stewart, people.person.parents, John Stewart
Jules Mann-Stewart, people.person.children, Dana Stewart
Topic, freebase.type_profile.kind, Portrayal
K-11, film.film.written_by, Jules Mann-Stewart
Jules Mann-Stewart, imdb.topic.name_id, nm0543032
Film character, freebase.type_profile.published, Published
John Stewart, award.award_nominee.award_nominations, m.0y7s53j
Television producer, people.profession.people_with_this_profession, John Stewart
Kristen Stewart, people.person.parents, John Stewart
Fictional Character, freebase.type_profile.published, Published
The Thirteenth Year, film.film.starring, m.0gww8d_
Film character, type.type.expected_by, Other conquests
Dana Stewart, people.person.parents, John Stewart
Jules Mann-Stewart, people.person.place_of_birth, Australia
m.0j4jpxq, people.marriage.spouse, Jules Mann-Stewart
Girl in Fountain Line, common.topic.notable_types, Film character
Film character, freebase.type_profile.strict_included_types, Fictional Character
John Stewart, people.person.profession, Television Director
Film character, freebase.type_profile.kind, Portrayal
Jules Mann-Stewart, film.director.film, K-11
Television Director, people.profession.people_with_this_profession, John Stewart
English Australian, people.ethnicity.people, Jules Mann-Stewart
Jules Mann-Stewart, people.person.children, Kristen Stewart
Fictional Character, freebase.type_profile.kind, Portrayal
Kristen Stewart, people.person.parents, Jules Mann-Stewart
K-11, film.film.directed_by, Jules Mann-Stewart
Character, type.property.reverse_property, Portrayed in films
Jules Mann-Stewart, people.person.children, Taylor Stewart
Film, type.domain.types, Film character
Jules Mann-Stewart, people.person.spouse_s, m.0j4jpxq
Kristen Stewart, people.person.children, Jules Mann-Stewart
Jules Mann-Stewart, people.person.date_of_birth, 1959-08-27
Girl in Fountain Line, film.performance.character, m.0gww8d_
Taylor Stewart, people.person.parents, John Stewart
Character, rdf-schema#range, Film character
Film Editor, people.profession.people_with_this_profession, Jules Mann-Stewart
John Stewart, people.person.children, Cameron Stewart
Australia, location.location.people_born_here, Jules Mann-Stewart
m.0gww8d_, film.performance.special_performance_type, Uncredited
Topic, freebase.type_profile.published, Published
Fictional Character, freebase.type_profile.strict_included_types, Topic
Jules Mann-Stewart, people.person.children, Cameron Stewart
John Stewart, people.person.profession, Television producer
Film character, type.type.expected_by, Killed by
Girl in Fountain Line, common.topic.notable_for, g.125h51rd5
K-11, film.film.story_by, Jules Mann-Stewart
Jules Mann-Stewart, film.film_story_contributor.film_story_credits, K-11

Answer: John Stewart
Jules Mann-Stewart