Question: Ken Burns produced which series for TV?
Choices: The Civil War
The Contender
George Washington
Charlie's Angels
Barney Miller
The Ten Commandments
Game of Thrones
30 Rock
Battlestar Galactica
The Biggest Loser
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "television series" . ?e <producer> ?e_1 . ?e_1 <pred:name> "Ken Burns" .   }
Program:
function: Find
inputs: Ken Burns
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: television series
function: What
dependencies: 2
Answer: The Civil War