Question: Regarding the person who is Rocky IV's screenwriter, tell me his or her work period (start)
Choices:
1971
1938
1937
1890
1987
1997
1926-04-06
2005
1960
1941
Program:
function: Find
inputs: Rocky IV
function: Relate
dependencies: 0
inputs: screenwriter
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: work period (start)
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <screenwriter> ?e . ?e_1 <pred:name> "Rocky IV" .  ?e <work_period_(start)> ?pv .  }
Answer: 1971