Question: What communication medium is  the notable work of someone who died in Harlem ?
Choices:
VHS
freedom of speech
The Grapes of Wrath
cartoon
women's rights
The Count of Monte Cristo
Oz
New York
The New York Times
Blu-ray Disc
Answer: The Grapes of Wrath
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "communication medium" . ?e_1 <notable_work> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "human" . ?e_1 <place_of_death> ?e_2 . ?e_2 <pred:name> "Harlem" .   }
Program:
function: Find
inputs: Harlem
function: Relate
dependencies: 0
inputs: place of death
backward
function: FilterConcept
dependencies: 1
inputs: human
function: Relate
dependencies: 2
inputs: notable work
forward
function: FilterConcept
dependencies: 3
inputs: communication medium
function: What
dependencies: 4