Question: How was it determined that Loudoun County has a population of 315426?
Choices:
Russian Empire Census
rated voltage
gross floor area
administrative division valid at the time point of history to which the data relates
estimation process
hearth tax
United Kingdom Census 2001
extrapolation
average
Sixth National Population Census of the People's Republic of China
Answer: estimation process
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Loudoun County" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "315426"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Loudoun County
function: QueryAttrQualifier
dependencies: 0
inputs: population
315426
determination method