Question: What method determines that 510393 is the population of Plymouth County (that contains Brockton)?
Choices: administrative division valid at the time point of history to which the data relates
lead-lead dating
average
tradition
administrative division valid at the moment of publication
Canada 2011 Census
Population registration in Sweden
demographic balance
United Kingdom Census 1981
de facto
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Plymouth County" . ?e_1 <located_in_the_administrative_territorial_entity> ?e . ?e_1 <pred:name> "Brockton" .  ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "510393"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Brockton
function: Relate
dependencies: 0
inputs: located in the administrative territorial entity
forward
function: Find
inputs: Plymouth County
function: And
dependencies: 1
2
function: QueryAttrQualifier
dependencies: 3
inputs: population
510393
determination method
Answer: demographic balance