Question: How was it determined that 609,967 is the population of a capital that is the twinned administrative body of Potsdam ?
Choices: Canada 2016 Census
estimation
average
census
Canada 2011 Census
questionnaire
FIFA World Rankings
gross floor area
Population registration in Sweden
de facto
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "capital" . ?e_1 <twinned_administrative_body> ?e . ?e_1 <pred:name> "Potsdam" .  ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "509667"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Potsdam
function: Relate
dependencies: 0
inputs: twinned administrative body
forward
function: FilterConcept
dependencies: 1
inputs: capital
function: QueryAttrQualifier
dependencies: 2
inputs: population
509667
determination method
Answer: census