Question: How was it determined that Rockville has a population of 2047?
Choices: de jure
census
Pensky–Martens closed-cup test
United Kingdom Census 2001
lead-lead dating
United States Census
administrative division valid at the time point of history to which the data relates
Russian Empire Census
2010 United States Census
United Kingdom Census 1971
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Rockville" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "2047"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Rockville
function: QueryAttrQualifier
dependencies: 0
inputs: population
2047
determination method
Answer: census