Question: When was Robert Forster (the one that has the occupation of guitarist) born?
Choices:
1944-02-14
1979-05-09
1973-04-11
1970-11-16
1809-02-12
1914-10-17
1957-06-29
1888-07-23
1947-06-17
1973-01-31
Answer: 1957-06-29
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Robert Forster" . ?e <occupation> ?e_1 . ?e_1 <pred:name> "guitarist" .  ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: guitarist
function: Relate
dependencies: 0
inputs: occupation
backward
function: Find
inputs: Robert Forster
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth