Question: How was the population figure 321156 determined for the Pennsylvania county with Wilkes-Barre as its capital?
Choices: Family record booklet
2016 Australian census
register office
de jure
hearth tax
United States Census
census
1860 United States Census
estimation process
demographic balance
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of Pennsylvania" . ?e <capital> ?e_1 . ?e_1 <pred:name> "Wilkes-Barre" .  ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "321156"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Wilkes-Barre
function: Relate
dependencies: 0
inputs: capital
backward
function: FilterConcept
dependencies: 1
inputs: county of Pennsylvania
function: QueryAttrQualifier
dependencies: 2
inputs: population
321156
determination method
Answer: estimation process