Question: When was a Maryland County's (established 1642) population 19944?
Choices: 1833-09-18
2001-01-01
1920
2003-12-15
1995-02-20
2003-03-26
1980-05-01
2000-04-01
1790-01-01
2013-07-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of Maryland" . ?e <inception> ?pv_1 . ?pv_1 <pred:year> 1642 . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "19944"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Program:
function: FindAll
function: FilterYear
dependencies: 0
inputs: inception
1642
=
function: FilterConcept
dependencies: 1
inputs: county of Maryland
function: QueryAttrQualifier
dependencies: 2
inputs: population
19944
point in time
Answer: 2013-07-01