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 drug did the actor who portrayed the character Urethane Wheels Guy overdosed on? 
Knowledge Triplets: Damien Zachary Cord, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Robert Bingham
Jimmy McCulloch, people.deceased_person.cause_of_death, Heroin overdose
Tim Buckley, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Tim Buckley
Film character, freebase.type_profile.strict_included_types, Fictional Character
Heroin overdose, people.cause_of_death.people, Simon Monkhouse
Simon Monkhouse, people.deceased_person.cause_of_death, Heroin overdose
Film character, type.type.expected_by, Character using Wham-O product
Heroin overdose, people.cause_of_death.people, Eddy Shaver
Heroin overdose, people.cause_of_death.people, Janis Joplin
Film character, freebase.type_hints.included_types, Fictional Character
Debbie Linden, people.deceased_person.cause_of_death, Heroin overdose
Andrew Wood, people.deceased_person.cause_of_death, Heroin overdose
Urethane Wheels Guy, common.topic.notable_types, Film character
Jon Vincent, people.deceased_person.cause_of_death, Heroin overdose
Urethane Wheels Guy, film.film_character.portrayed_in_films, m.04ztyj9
Heroin overdose, people.cause_of_death.people, Chris Farley
Tru Haley, people.deceased_person.cause_of_death, Heroin overdose
Assassination by 'Suicide', people.cause_of_death.includes_causes_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Jan Paul Beahm
Rachel Whitear, people.deceased_person.cause_of_death, Heroin overdose
m.04ztyj9, film.performance.character, Urethane Wheels Guy
Heroin overdose, people.cause_of_death.people, Freddy James McConnel
Heroin overdose, people.cause_of_death.people, Andrew Stewart
Heroin overdose, people.cause_of_death.people, Rachel Whitear
Clinton Haines, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Carl Lee
Carl Lee, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Peter Watts
Megan Connolly, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Robbin Crosby
Heroin overdose, people.cause_of_death.people, Pepin 
Heroin overdose, people.cause_of_death.people, Warren Tartaglia
Heroin overdose, people.cause_of_death.people, Megan Connolly
Heroin overdose, people.cause_of_death.people, Lucy Grealy
Robert Quine, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Bruce Berry
Heroin overdose, medicine.disease.parent_disease, Drug overdose
Peter Watts, people.deceased_person.cause_of_death, Heroin overdose
Zac Foley, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Brad Renfro
Alice Ormsby-Gore, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Dwayne Goettel
m.04ztyj9, film.actor.film, Mitch Hedberg
Heroin overdose, people.cause_of_death.parent_cause_of_death, Drug overdose
Danny Whitten, people.deceased_person.cause_of_death, Heroin overdose
Trevor Goddard, people.deceased_person.cause_of_death, Heroin overdose
Film character, type.type.expected_by, Character
Film character, freebase.type_profile.kind, Annotation
Layne Staley, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Joe Cinque
Max Cantor, people.deceased_person.cause_of_death, Heroin overdose
Dee Dee Ramone, people.deceased_person.cause_of_death, Heroin overdose
Tim Hardin, people.deceased_person.cause_of_death, Heroin overdose
Brad Renfro, people.deceased_person.cause_of_death, Heroin overdose
Fictional Character, freebase.type_profile.kind, Portrayal
Heroin overdose, people.cause_of_death.people, Nicholas Curtis
Heroin overdose, people.cause_of_death.people, John Belushi
Jeanne Eagels, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Carl Steven
Heroin overdose, people.cause_of_death.people, James Hayden
Heroin overdose, people.cause_of_death.people, Brett Whiteley
Heroin overdose, people.cause_of_death.people, GG Allin
Heroin overdose, people.cause_of_death.people, Jean-Michel Basquiat
Heroin overdose, people.cause_of_death.people, Katie Wilkins
Lords of Dogtown, film.film.starring, m.04ztyj9
Heroin overdose, people.cause_of_death.people, Clinton Haines
Chris Farley, people.deceased_person.cause_of_death, Heroin overdose
Jan Paul Beahm, people.deceased_person.cause_of_death, Heroin overdose
Warren Tartaglia, people.deceased_person.cause_of_death, Heroin overdose
Sonny Clark, people.deceased_person.cause_of_death, Heroin overdose
Dick Twardzik, people.deceased_person.cause_of_death, Heroin overdose
Katie Wilkins, people.deceased_person.cause_of_death, Heroin overdose
Robert Bingham, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, David Lerner
Bridgette Andersen, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Glenn Quinn
Heroin overdose, people.cause_of_death.people, Eugene Lipscomb
Janis Joplin, people.deceased_person.cause_of_death, Heroin overdose
Frankie Lymon, people.deceased_person.cause_of_death, Heroin overdose
Michael Weber, people.deceased_person.cause_of_death, Heroin overdose
Hillel Slovak, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Jackie Curtis
Heroin overdose, people.cause_of_death.people, Mike Henson
Heroin overdose, people.cause_of_death.people, Danny Whitten
Heroin overdose, people.cause_of_death.parent_cause_of_death, Assassination by 'Suicide'
Heroin overdose, people.cause_of_death.people, Paula Yates
Film character, freebase.type_profile.kind, Portrayal
Heroin overdose, people.cause_of_death.people, Dee Dee Ramone
Peaches Geldof, people.deceased_person.cause_of_death, Heroin overdose
Talitha Getty, people.deceased_person.cause_of_death, Heroin overdose
Andrew Stewart, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Alice Ormsby-Gore
Heroin overdose, people.cause_of_death.people, Frankie Lymon
m.04ztyj9, film.performance.film, Lords of Dogtown
Fictional Character, freebase.type_hints.included_types, Topic
Drug overdose, people.cause_of_death.includes_causes_of_death, Heroin overdose
Film character, type.type.properties, Portrayed in films
Lucy Grealy, people.deceased_person.cause_of_death, Heroin overdose
Freddy James McConnel, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Paul Demayo
Pepin , people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Bradley Nowell
Character, type.property.reverse_property, Portrayed in films
Brett Whiteley, people.deceased_person.cause_of_death, Heroin overdose
Howie Epstein, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Handsome Ned
Jean-Michel Basquiat, people.deceased_person.cause_of_death, Heroin overdose
Film character, freebase.type_hints.included_types, Topic
Mike Henson, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Eileen Davies
Heroin overdose, people.cause_of_death.people, Tru Haley
Heroin overdose, people.cause_of_death.people, Paul Hayward
Heroin overdose, people.cause_of_death.people, Mitch Hedberg
Heroin overdose, people.cause_of_death.people, Debbie Linden
Film character, freebase.type_profile.published, Published
Heroin overdose, people.cause_of_death.people, Trevor Goddard
Carl Steven, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Bridgette Andersen
Heroin overdose, people.cause_of_death.people, Jon Vincent
Heroin overdose, people.cause_of_death.people, Peaches Geldof
Nicholas Curtis, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Jeremy Michael Ward
Heroin overdose, people.cause_of_death.people, Hillel Slovak
José Luis Fernández, people.deceased_person.cause_of_death, Heroin overdose
Fictional Character, freebase.type_profile.published, Published
Heroin overdose, people.cause_of_death.people, Sid Vicious
Mitch Hedberg, people.deceased_person.cause_of_death, Heroin overdose
Handsome Ned, people.deceased_person.cause_of_death, Heroin overdose
Jeremy Michael Ward, people.deceased_person.cause_of_death, Heroin overdose
Zeke Zettner, people.deceased_person.cause_of_death, Heroin overdose
Elisa Bridges, people.deceased_person.cause_of_death, Heroin overdose
Film character, type.type.expected_by, Other conquests
Heroin overdose, people.cause_of_death.people, Dave Brockie
Heroin overdose, people.cause_of_death.people, Mike Bloomfield
Paul Hayward, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Tim Hemensley
Heroin overdose, people.cause_of_death.people, Ricky Williams
Heroin overdose, people.cause_of_death.people, Zeke Zettner
Robert Pastorelli, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Jonathan Melvoin
Sid Vicious, people.deceased_person.cause_of_death, Heroin overdose
Topic, freebase.type_profile.published, Published
Matthew Ansara, people.deceased_person.cause_of_death, Heroin overdose
Character, owl#inverseOf, Portrayed in films
Eileen Davies, people.deceased_person.cause_of_death, Heroin overdose
Film character, type.type.properties, Portrayed in films (dubbed)
James Hayden, people.deceased_person.cause_of_death, Heroin overdose
Character, type.property.expected_type, Film character
Mike Bloomfield, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Dick Twardzik
Heroin overdose, people.cause_of_death.people, Robert Pastorelli
Joe Cinque, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Matthew Ansara
Heroin overdose, people.cause_of_death.people, Elisa Bridges
Film character, type.type.expected_by, Killed by
David Lerner, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Robert Quine
GG Allin, people.deceased_person.cause_of_death, Heroin overdose
Jonathan Melvoin, people.deceased_person.cause_of_death, Heroin overdose
Mitch Hedberg, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, River Phoenix
Mitch Hedberg, film.actor.film, m.04ztyj9
Jackie Curtis, people.deceased_person.cause_of_death, Heroin overdose
River Phoenix, people.deceased_person.cause_of_death, Heroin overdose
Dwayne Goettel, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, José Luis Fernández
Eddy Shaver, people.deceased_person.cause_of_death, Heroin overdose
Bruce Berry, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Layne Staley
Urethane Wheels Guy, common.topic.article, m.0gl_8t3
m.04ztyj9, film.performance.actor, Mitch Hedberg
Fictional Character, freebase.type_profile.strict_included_types, Topic
Heroin overdose, people.cause_of_death.parent_cause_of_death, Assassination by 'Accident'
Dave Brockie, people.deceased_person.cause_of_death, Heroin overdose
Urethane Wheels Guy, common.topic.notable_for, g.1258c52b2
Heroin overdose, people.cause_of_death.people, Jeanne Eagels
Paula Yates, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Tim Hardin
Drug overdose, medicine.disease.includes_diseases, Heroin overdose
Tim Hemensley, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Jimmy McCulloch
Heroin overdose, people.cause_of_death.people, Paul Ackland
Heroin overdose, people.cause_of_death.people, Michael Weber
Paul Demayo, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Sonny Clark
Robbin Crosby, people.deceased_person.cause_of_death, Heroin overdose
Bradley Nowell, people.deceased_person.cause_of_death, Heroin overdose
Glenn Quinn, people.deceased_person.cause_of_death, Heroin overdose
m.0gl_8t3, common.document.content, m.0gl_8sv
Film character, freebase.type_profile.strict_included_types, Topic
Heroin overdose, people.cause_of_death.people, Howie Epstein
Character, rdf-schema#range, Film character
Heroin overdose, people.cause_of_death.people, Talitha Getty
Film, type.domain.types, Film character
Film character, type.type.domain, Film
John Belushi, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Pamela Courson
Heroin overdose, people.cause_of_death.people, Kristen Pfaff
Heroin overdose, people.cause_of_death.people, Andrew Wood
Eugene Lipscomb, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Damien Zachary Cord
Heroin overdose, people.cause_of_death.people, Zac Foley
Film character, common.topic.article, m.02_96_z
Ricky Williams, people.deceased_person.cause_of_death, Heroin overdose
Pamela Courson, people.deceased_person.cause_of_death, Heroin overdose
Paul Ackland, people.deceased_person.cause_of_death, Heroin overdose
Heroin overdose, people.cause_of_death.people, Max Cantor
Assassination by 'Accident', people.cause_of_death.includes_causes_of_death, Heroin overdose
Topic, freebase.type_profile.kind, Portrayal
Urethane Wheels Guy, film.film_character.portrayed_in_films, m.04ztyj9
Kristen Pfaff, people.deceased_person.cause_of_death, Heroin overdose

Answer: Heroin overdose