Question: Ravenna's population size of 159,057 was figured in what way?
Choices: de facto
demographic balance
middle
tradition
rated voltage
de jure
Family record booklet
Taqdir
estimation process
questionnaire
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Ravenna" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "159057"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Ravenna
function: QueryAttrQualifier
dependencies: 0
inputs: population
159057
determination method
Answer: demographic balance