Question: Which activity is famously associated with both Trent Reznor and Thom Yorke?
Choices: Dark Horse Comics
2008 Tour de France
piano
experimental rock
object-oriented programming
bass guitar
JavaScript
electronica
alternative rock
programming
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "activity" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Trent Reznor" .  ?e <famous_people> ?e_2 . ?e_2 <pred:name> "Thom Yorke" .  }
Program:
function: Find
inputs: Trent Reznor
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: activity
function: Find
inputs: Thom Yorke
function: Relate
dependencies: 3
inputs: famous people
backward
function: FilterConcept
dependencies: 4
inputs: activity
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: programming