Question: Which person's RePEc Short-ID is pca539?
Choices:
William Henry Harrison
Richard Gere
Gene Callahan
Milton Friedman
Sylvester Stallone
Robert Guza, Jr.
Dylan McDermott
Friedrich Hayek
Peter MacNicol
David Byrne
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: RePEc Short-ID
pca539
function: FilterConcept
dependencies: 1
inputs: human
function: What
dependencies: 2
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <RePEc_Short-ID> ?pv . ?pv <pred:value> "pca539" .  }
Answer: Gene Callahan