Question: Who is the author of The Hitchhiker's Guide to the Galaxy (the one that is created by Douglas Adams)   ?
Choices: William Henry Harrison
Max Fleischer
Sylvester Stallone
Douglas Adams
Richard Hunt
Rahul Dev Burman
Andrew Stevens
Simon Cowell
Richard Gere
Hayden Christensen
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <after_a_work_by> ?e . ?e_1 <pred:name> "The Hitchhiker's Guide to the Galaxy" . ?e_1 <creator> ?e_2 . ?e_2 <pred:name> "Douglas Adams" .   }
Program:
function: Find
inputs: Douglas Adams
function: Relate
dependencies: 0
inputs: creator
backward
function: Find
inputs: The Hitchhiker's Guide to the Galaxy
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: after a work by
forward
function: FilterConcept
dependencies: 4
inputs: human
function: What
dependencies: 5
Answer: Douglas Adams