Question: What is the time point of a population of 64925993 for the historical country that is the country of Potsdam (the start time of this statement is 1871-01-18)?
Choices: 1852-12-01
1914
1910-12-01
1998-02-18
2011-06-23
2011-06-05
1857
1978-01-01
1902
2018-11-24
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "historical country" . ?e_1 <country> ?e . ?e_1 <pred:name> "Potsdam" . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <country> ; <pred:fact_t> ?e ] <start_time> ?qpv_1 . ?qpv_1 <pred:date> "1871-01-18"^^xsd:date . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "64925993"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Program:
function: Find
inputs: Potsdam
function: Relate
dependencies: 0
inputs: country
forward
function: QFilterDate
dependencies: 1
inputs: start time
1871-01-18
=
function: FilterConcept
dependencies: 2
inputs: historical country
function: QueryAttrQualifier
dependencies: 3
inputs: population
64925993
point in time
Answer: 1910-12-01