Question: show me the person that is the creator of the television series that has Timothy busfield in the cast.
Choices: Timothy Busfield
Tim Minear
Mitchell Hurwitz
Rod Serling
Michael Piller
Steven Levitan
Marshall Herskovitz
James Hong
Claude Berri
Glen A. Larson
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <creator> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "television series" . ?e_1 <cast_member> ?e_2 . ?e_2 <pred:name> "Timothy Busfield" .   }
Program:
function: Find
inputs: Timothy Busfield
function: Relate
dependencies: 0
inputs: cast member
backward
function: FilterConcept
dependencies: 1
inputs: television series
function: Relate
dependencies: 2
inputs: creator
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Marshall Herskovitz