Question: What is the end time for the public key fingerprint is 1CF7 FF6F ADF5 CA9F BE1B 8CB2 ED67 ECD6 5DCF 6AE7?
Choices: 2018-01-01
1922-11-01
1976
1907
1985-12-31
1809-09-05
1980-08-03
1932-02-26
1970-01-01
1797-05-11
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "operating system" . ?e <license> ?e_1 . ?e_1 <pred:name> "BSD licenses" .  ?e <public_key_fingerprint> ?pv . ?pv <pred:value> "1CF7 FF6F ADF5 CA9F BE1B  8CB2 ED67 ECD6 5DCF 6AE7" . [ <pred:fact_h> ?e ; <pred:fact_r> <public_key_fingerprint> ; <pred:fact_t> ?pv ] <end_time> ?qpv .  }
Program:
function: Find
inputs: BSD licenses
function: Relate
dependencies: 0
inputs: license
backward
function: FilterConcept
dependencies: 1
inputs: operating system
function: QueryAttrQualifier
dependencies: 2
inputs: public key fingerprint
1CF7 FF6F ADF5 CA9F BE1B  8CB2 ED67 ECD6 5DCF 6AE7
end time
Answer: 2018-01-01