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 parents of the actor who played the character "Lillian Jordan"? 
Knowledge Triplets: Film character, freebase.type_profile.kind, Portrayal
Film character, type.type.expected_by, Character using Wham-O product
Fictional Character, freebase.type_profile.published, Published
m.03jpmd3, film.performance.film, The Story of Us
m.03jpmd3, film.performance.actor, Betty White
Character, owl#inverseOf, Portrayed in films
Horace Lawrence White, people.person.children, Betty White
Character, type.property.reverse_property, Portrayed in films
Film character, freebase.type_hints.included_types, Topic
Film character, freebase.type_profile.kind, Annotation
Character, type.property.expected_type, Film character
Film character, type.type.domain, Film
Film character, freebase.type_profile.strict_included_types, Fictional Character
m.0vp6hm5, people.marriage.spouse, Horace Lawrence White
Betty White, people.person.children, Horace Lawrence White
Betty White, people.person.parents, Tess Curtis White
Salesman, people.profession.people_with_this_profession, Horace Lawrence White
Film character, type.type.expected_by, Killed by
Lillian Jordan, common.topic.notable_types, Film character
Film character, type.type.expected_by, Other conquests
Horace Lawrence White, people.person.profession, Salesman
Tess Curtis White, people.person.nationality, United States of America
Film character, freebase.type_profile.strict_included_types, Topic
Fictional Character, freebase.type_profile.strict_included_types, Topic
Tess Curtis White, people.person.spouse_s, m.0vp6hm5
Lillian Jordan, film.film_character.portrayed_in_films, m.03jpmd3
Film character, type.type.properties, Portrayed in films
Film character, freebase.type_profile.published, Published
Horace Lawrence White, people.person.nationality, United States of America
Tess Curtis White, people.person.children, Betty White
Topic, freebase.type_profile.kind, Portrayal
Film character, freebase.type_hints.included_types, Fictional Character
Film character, type.type.properties, Portrayed in films (dubbed)
Topic, freebase.type_profile.published, Published
Betty White, people.person.parents, Tess Curtis White
Lillian Jordan, film.film_character.portrayed_in_films, m.03jpmd3
Film, type.domain.types, Film character
Betty White, people.person.parents, Horace Lawrence White
Horace Lawrence White, people.person.spouse_s, m.0vp6hm5
Film character, common.topic.article, m.02_96_z
m.0vp6hm5, people.marriage.spouse, Tess Curtis White
Lillian Jordan, common.topic.notable_for, g.12592ztln
Film character, type.type.expected_by, Character
Fictional Character, freebase.type_profile.kind, Portrayal
Electrical engineer, people.profession.people_with_this_profession, Horace Lawrence White
m.03jpmd3, film.performance.character, Lillian Jordan
Character, rdf-schema#range, Film character
Tess Curtis White, people.person.gender, Female
m.03jpmd3, film.performance.actor, Betty White
Betty White, film.actor.film, m.03jpmd3
Horace Lawrence White, people.person.profession, Electrical engineer
Horace Lawrence White, people.person.gender, Male
Fictional Character, freebase.type_hints.included_types, Topic
The Story of Us, film.film.starring, m.03jpmd3

Answer: Horace Lawrence White
Tess Curtis White