Question: It has an exploitation visa number of 14515, but what is the start time for the story set in the Soviet Union called Never Let Me Go?
Choices: 1688
2018
1960
1918-02-16
1937-07-07
1953-11-10
1969-12-22
1908
1972-05-25
1991-12-25
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Never Let Me Go" . ?e <narrative_location> ?e_1 . ?e_1 <pred:name> "Soviet Union" .  ?e <exploitation_visa_number> ?pv . ?pv <pred:value> "14515" . [ <pred:fact_h> ?e ; <pred:fact_r> <exploitation_visa_number> ; <pred:fact_t> ?pv ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Soviet Union
function: Relate
dependencies: 0
inputs: narrative location
backward
function: Find
inputs: Never Let Me Go
function: And
dependencies: 1
2
function: QueryAttrQualifier
dependencies: 3
inputs: exploitation visa number
14515
start time
Answer: 1953-11-10