Question: Who is the person employed by a land-grant university whose DOI prefix is 10.2458 ?
Choices: William Henry Harrison
Vincent van Gogh
Dick Clark
Richard Gere
Sylvester Stallone
Mark Berger
Vladimir Nabokov
Jon Anderson
Shemp Howard
Max Fleischer
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <employer> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "land-grant university" . ?e_1 <DOI_prefix> ?pv . ?pv <pred:value> "10.2458" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: DOI prefix
10.2458
function: FilterConcept
dependencies: 1
inputs: land-grant university
function: Relate
dependencies: 2
inputs: employer
backward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Jon Anderson