Question: What is the beginning date that Petrográd is the official name of Saint Petersburg?
Choices: 1896
1926-11-11
1301
2005-06-01
1813-11-20
1979-09-14
1801-07-01
2012-01-01
2009-03-31
1914-08-31
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Saint Petersburg" . ?e <official_name> ?pv . ?pv <pred:value> "Petrográd" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_name> ; <pred:fact_t> ?pv ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Saint Petersburg
function: QueryAttrQualifier
dependencies: 0
inputs: official name
Petrográd
start time
Answer: 1914-08-31