Question: For the Washington county, whose official website is http://www.co.pierce.wa.us, what is the determination method of this value for its population of 803393?
Choices: 2000 United States Census
Yemen General Census of Population, Housing and Establishments 2004
de jure
rated voltage
Canada 2011 Census
United Kingdom Census 2001
United Kingdom Census 1981
register office
estimation process
population projection
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of Washington" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.co.pierce.wa.us" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "803393"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.co.pierce.wa.us
function: FilterConcept
dependencies: 1
inputs: county of Washington
function: QueryAttrQualifier
dependencies: 2
inputs: population
803393
determination method
Answer: estimation process