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 theme songs were written by the actor who played the character Chuck McBride? 
Knowledge Triplets: Film character, freebase.type_profile.published, Published
It Takes Diff'rent Strokes, music.composition.composer, Alan Thicke
Fictional Character, freebase.type_profile.published, Published
The Facts of Life, music.recording.song, The Facts of Life
Big Wheels, music.composition.composer, Alan Thicke
John LaSalle, music.composer.compositions, It Takes Diff'rent Strokes
The Facts of Life, music.recording.song, Facts of Life
Al Burton, music.composer.compositions, Facts of Life
It Takes Diff'rent Strokes, music.composition.recordings, Diff'rent Strokes Theme (live in DC)
Gloria Loring, music.composer.compositions, Facts of Life
Alan Thicke, film.actor.film, m.0cs8j0k
Film character, common.topic.article, m.02_96_z
Film character, freebase.type_profile.strict_included_types, Topic
Chuck McBride, common.topic.notable_types, Film character
Alan Thicke, music.composition.composer, Hockey Sock Rock
Gloria Loring, music.composer.compositions, Arnold & Willy (Diff'rent Strokes)
Film character, type.type.expected_by, Killed by
Film character, freebase.type_hints.included_types, Topic
Wheel of Fortune, tv.tv_program.theme_song, Big Wheels
Facts of Life, music.recording.song, Facts of Life
It Takes Diff'rent Strokes, music.recording.song, It Takes Diff'rent Strokes
m.0zxdsq6, dataworld.gardening_hint.replaced_by, The Facts of Life
Alan Thicke, music.composer.compositions, Facts of Life
Big Wheels, tv.tv_theme_song.theme_song_for, Wheel of Fortune
Film character, freebase.type_hints.included_types, Fictional Character
Character, rdf-schema#range, Film character
Topic, freebase.type_profile.published, Published
Facts of Life, music.composition.recordings, Facts of Life
Alan Thicke, music.composition.composer, Facts of Life
Al Burton, music.composer.compositions, It Takes Diff'rent Strokes
Diff'rent Strokes, music.recording.song, It Takes Diff'rent Strokes
Gloria Loring, music.composer.compositions, The Facts of Life
Alan Thicke, music.composer.compositions, Hockey Sock Rock
Film character, freebase.type_profile.strict_included_types, Fictional Character
It Takes Diff'rent Strokes, music.composition.composer, Tom Smith
Fictional Character, freebase.type_profile.strict_included_types, Topic
The Facts of Life, music.composition.composer, Gloria Loring
Al Burton, music.composer.compositions, The Facts of Life
Arnold & Willy (Diff'rent Strokes), music.composition.recordings, Arnold & Willy (Diff'rent Strokes)
Topic, freebase.type_profile.kind, Portrayal
Character, type.property.reverse_property, Portrayed in films
Alan Thicke, music.composer.compositions, The Facts of Life
m.0cs8j0k, film.performance.film, Carolina
Film character, freebase.type_profile.kind, Portrayal
Character, owl#inverseOf, Portrayed in films
Film character, type.type.domain, Film
Chuck McBride, film.film_character.portrayed_in_films, m.0cs8j0k
The Facts of Life, music.composition.recordings, The Facts of Life
Film character, type.type.properties, Portrayed in films
Alan Thicke, music.composition.composer, Big Wheels
Fictional Character, freebase.type_hints.included_types, Topic
Character, type.property.expected_type, Film character
Diff'rent Strokes, tv.tv_program.theme_song, It Takes Diff'rent Strokes
It Takes Diff'rent Strokes, music.composition.composer, John LaSalle
Film character, type.type.expected_by, Character using Wham-O product
Film character, freebase.type_profile.kind, Annotation
m.0cs8j0k, film.performance.actor, Alan Thicke
Alan Thicke, music.composition.composer, It Takes Diff'rent Strokes
Alan Thicke, music.composer.compositions, Arnold & Willy (Diff'rent Strokes)
Facts of Life, music.composition.composer, Al Burton
Facts of Life, music.composition.composer, Gloria Loring
Arnold & Willy (Diff'rent Strokes), music.recording.song, Arnold & Willy (Diff'rent Strokes)
Chuck McBride, common.topic.notable_for, g.125bp5kn4
Fictional Character, freebase.type_profile.kind, Portrayal
It Takes Diff'rent Strokes, music.composition.recordings, Diff'rent Strokes
Hockey Sock Rock, music.composition.composer, Alan Thicke
Alan Thicke, music.composer.compositions, It Takes Diff'rent Strokes
It Takes Diff'rent Strokes, music.composition.recordings, Diff'rent Strokes (It Takes Diff'rent Strokes)
Chuck McBride, film.film_character.portrayed_in_films, m.0cs8j0k
It Takes Diff'rent Strokes, music.composition.recordings, It Takes Diff'rent Strokes
Alan Thicke, music.composer.compositions, Arnold & Willy (Diff'rent Strokes)
The Facts of Life, music.composition.composer, Alan Thicke
It Takes Diff'rent Strokes, music.composition.composer, Al Burton
Film, type.domain.types, Film character
Gloria Loring, music.composer.compositions, It Takes Diff'rent Strokes
Film character, type.type.properties, Portrayed in films (dubbed)
Tom Smith, music.composer.compositions, It Takes Diff'rent Strokes
m.0cs8j0k, film.performance.actor, Alan Thicke
Diff'rent Strokes Theme (live in DC), music.recording.song, It Takes Diff'rent Strokes
Al Burton, music.composer.compositions, Arnold & Willy (Diff'rent Strokes)
The Facts of Life, music.composition.composer, Al Burton
Arnold & Willy (Diff'rent Strokes), music.composition.composer, Alan Thicke
It Takes Diff'rent Strokes, tv.tv_theme_song.theme_song_for, Diff'rent Strokes
Facts of Life, music.composition.recordings, The Facts of Life
Alan Thicke, music.composer.compositions, Big Wheels
Carolina, film.film.starring, m.0cs8j0k
Facts of Life, music.composition.composer, Alan Thicke
m.0cs8j0k, film.performance.character, Chuck McBride
Film character, type.type.expected_by, Character
Arnold & Willy (Diff'rent Strokes), music.composition.composer, Al Burton
Alan Thicke, music.composition.composer, The Facts of Life
Arnold & Willy (Diff'rent Strokes), music.composition.composer, Gloria Loring
It Takes Diff'rent Strokes, music.composition.composer, Gloria Loring
Diff'rent Strokes (It Takes Diff'rent Strokes), music.recording.song, It Takes Diff'rent Strokes
Film character, type.type.expected_by, Other conquests

Answer: Facts of Life
The Facts of Life
Hockey Sock Rock
It Takes Diff'rent Strokes
Arnold & Willy (Diff'rent Strokes)
Big Wheels