Question: When did the professional career begin for the person whose dad is Bruce Dern?
Choices:
1941
1982
1880
1964
1973
1976
1993
1966
1981
1814
Answer: 1973
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <father> ?e_1 . ?e_1 <pred:name> "Bruce Dern" .  ?e <work_period_(start)> ?pv .  }
Program:
function: Find
inputs: Bruce Dern
function: Relate
dependencies: 0
inputs: father
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: work period (start)