Question: When did the person born in Riga die?
Choices: 2009-08-14
1954-11-09
2017-01-27
1970-02-17
2001-11-29
2009-07-03
2000-01-31
2011-01-21
1971-06-19
1896-10-03
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <place_of_birth> ?e_1 . ?e_1 <pred:name> "Riga" .  ?e <date_of_death> ?pv .  }
Program:
function: Find
inputs: Riga
function: Relate
dependencies: 0
inputs: place of birth
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: date of death
Answer: 2000-01-31