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: which is the episode of a radio program whose artist is bob and ray? 
Knowledge Triplets: Bob and Ray, music.artist.track, See ext. info
The End, music.recording.artist, Bob and Ray
Bob and Ray, broadcast.artist.content, The Sunday Show
Bob and Ray, music.artist.track, Bob and Ray visit Dr. Ahkbar at the Castle
The Sunday Show, radio.radio_program.episodes, Glenn Gould
Bob and Ray in the Laboratory, music.recording.tracks, Bob and Ray in the Laboratory
The Thing, music.recording.length, 79.933
The Sunday Show, radio.radio_program.episodes, Bob and Ray
m.0j8z14t, music.group_membership.group, Bob and Ray
Bob and Ray Throw a Stereo Spectacular, music.release.track, The End
Bob and Ray in the Laboratory, music.recording.artist, Bob and Ray
Bob and Ray visit Dr. Ahkbar at the Castle, music.recording.artist, Bob and Ray
Glenn Gould, broadcast.artist.content, The Sunday Show
m.0j8z14m, music.group_membership.member, Ray Goulding
Air Travel, music.recording.tracks, Air Travel
Bob and Ray visit Dr. Ahkbar at the Castle, music.recording.length, 276.666
m.0j8z14t, music.group_membership.member, Bob Elliott
The Sunday Show, award.award_winning_work.awards_won, m.05v1tn9
Air Travel, music.recording.releases, Gusselby Records: Cruising Music From the 50's & 60's
Bob and Ray visit Dr. Ahkbar at the Castle, music.release_track.recording, Bob and Ray visit Dr. Ahkbar at the Castle
Interview, broadcast.genre.content, The Sunday Show
Bob and Ray in the Round Room, music.recording.artist, Bob and Ray
See ext. info, music.recording.releases, Bob&Ray - A Night of Two Stars
The Sunday Show, broadcast.content.artist, Glenn Gould
See ext. info, music.release_track.recording, See ext. info
Bob&Ray - A Night of Two Stars, music.album.primary_release, Bob&Ray - A Night of Two Stars
The Thing, music.recording.tracks, The Thing
Bob&Ray - A Night of Two Stars, music.release.album, Bob&Ray - A Night of Two Stars
Bob and Ray in the Round Room, music.recording.tracks, Bob and Ray in the Round Room
The Sunday Show, broadcast.content.artist, Bob and Ray
The End, music.release_track.recording, The End
Bob and Ray, radio.radio_program_episode.program, The Sunday Show
Ray Goulding, music.group_member.membership, m.0j8z14m
Bob and Ray in the Round Room, music.recording.releases, Bob and Ray Throw a Stereo Spectacular
See ext. info, music.recording.length, 38649.6
Bob and Ray, music.artist.track, The End
Bob and Ray in the Round Room, music.release_track.recording, Bob and Ray in the Round Room
Bob and Ray in the Round Room, music.recording.length, 145.666
The Sunday Show, broadcast.content.artist, Paco de Lucía
The End, music.recording.releases, Bob and Ray Throw a Stereo Spectacular
m.05v1tn9, award.award_honor.honored_for, The Sunday Show
The Sunday Show, broadcast.content.genre, Performance art
Glenn Gould, radio.radio_program_episode.program, The Sunday Show
The Sunday Show, broadcast.content.location, Washington, D.C.
The Thing, music.recording.releases, Bob and Ray Throw a Stereo Spectacular
Bob and Ray Throw a Stereo Spectacular, music.release.track, Bob and Ray visit Dr. Ahkbar at the Castle
See ext. info, music.recording.artist, Bob and Ray
Bob and Ray visit Dr. Ahkbar at the Castle, music.recording.releases, Bob and Ray Throw a Stereo Spectacular
Bob and Ray in the Laboratory, music.release_track.recording, Bob and Ray in the Laboratory
The Sunday Show, user.zsi_editorial.editorial.topic.comments, ZSI on The Sunday Show
ZSI on The Sunday Show, user.zsi_editorial.editorial.comment.target, The Sunday Show
Bob and Ray in the Laboratory, music.recording.length, 141.426
Bob&Ray - A Night of Two Stars, music.album.releases, Bob&Ray - A Night of Two Stars
Gusselby Records: Cruising Music From the 50's & 60's, music.release.track, Air Travel
Air Travel, music.recording.artist, Bob and Ray
Tapiola Choir, radio.radio_program_episode.program, The Sunday Show
See ext. info, music.recording.tracks, See ext. info
Bob and Ray, music.artist.track, Air Travel
The Thing, music.recording.artist, Bob and Ray
m.0j8z14m, music.group_membership.group, Bob and Ray
Bob Elliott, music.group_member.membership, m.0j8z14t
Bob and Ray, music.musical_group.member, m.0j8z14t
Bob and Ray in the Laboratory, music.recording.releases, Bob and Ray Throw a Stereo Spectacular
Bob and Ray Throw a Stereo Spectacular, music.release.track, Bob and Ray in the Laboratory
The Sunday Show, broadcast.content.genre, Interview
The End, music.recording.tracks, The End
The Thing, music.release_track.recording, The Thing
Air Travel, music.recording.length, 140.0
Bob and Ray, music.artist.track, Bob and Ray in the Laboratory
Rod MacLeish, radio.radio_program_episode.program, The Sunday Show
m.06bflmc, dataworld.gardening_hint.replaced_by, Bob and Ray
Music, radio.radio_subject.programs_with_this_subject, The Sunday Show
Bob and Ray visit Dr. Ahkbar at the Castle, music.recording.tracks, Bob and Ray visit Dr. Ahkbar at the Castle
Bob&Ray - A Night of Two Stars, music.release.track, See ext. info
The Sunday Show, broadcast.content.artist, Chick Corea
Air Travel, music.release_track.recording, Air Travel
Bob and Ray Throw a Stereo Spectacular, music.release.track, Bob and Ray in the Round Room
Bob and Ray, music.musical_group.member, m.0j8z14m
The Sunday Show, broadcast.content.summary, Broadcasts of interviews and works of artists and performers.
The End, music.recording.length, 130.4
Chick Corea, broadcast.artist.content, The Sunday Show
Bob and Ray, music.artist.track, The Thing
Paco de Lucía, broadcast.artist.content, The Sunday Show
Bob and Ray Throw a Stereo Spectacular, music.release.track, The Thing
Bob and Ray, music.artist.album, Bob&Ray - A Night of Two Stars
The Sunday Show, radio.radio_program.episodes, Rod MacLeish
The Sunday Show, radio.radio_program.episodes, Tapiola Choir
Bob&Ray - A Night of Two Stars, music.album.artist, Bob and Ray
Performance art, broadcast.genre.content, The Sunday Show
m.02rg23, dataworld.gardening_hint.replaced_by, Bob and Ray
m.03xp47s, dataworld.gardening_hint.replaced_by, Bob and Ray
The Sunday Show, radio.radio_program.subjects, Music
Bob and Ray, music.artist.track, Bob and Ray in the Round Room

Answer: Glenn Gould
Tapiola Choir
Rod MacLeish