Question: What taxon is the main subject of the film with Mike Patton as a cast member?
Choices: Poaceae
Allium cepa
virus
white cabbage
Capsicum
Micropterus salmoides
bird
Northern Dancer
dinosaur
Persea americana
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "taxon" . ?e_1 <main_subject> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <cast_member> ?e_2 . ?e_2 <pred:name> "Mike Patton" .   }
Program:
function: Find
inputs: Mike Patton
function: Relate
dependencies: 0
inputs: cast member
backward
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: main subject
forward
function: FilterConcept
dependencies: 3
inputs: taxon
function: What
dependencies: 4
Answer: virus