Question: For the California county whose Dewey Decimal Classification is 2--79446, what is the time point for its population of 18251?
Choices:
1997-08-20
2010-04-01
2012-02-01
1861-01-01
1610
1986-09-22
2011-09-21
2002-11-20
1864-11-21
2004-07-07
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Dewey Decimal Classification
2--79446
function: FilterConcept
dependencies: 1
inputs: county of California
function: QueryAttrQualifier
dependencies: 2
inputs: population
18251
point in time
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of California" . ?e <Dewey_Decimal_Classification> ?pv_1 . ?pv_1 <pred:value> "2--79446" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "18251"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Answer: 2010-04-01