Question: What method was used to determine that the total fertility rate of a sovereign state, with nominal GDP of 2,160,872,541.4189 USD, is 5.101?
Choices: estimation process
United States Census
Sixth National Population Census of the People's Republic of China
Family record booklet
United Kingdom Census 1981
Population registration in Sweden
hearth tax
lead-lead dating
Pensky–Martens closed-cup test
United Kingdom Census 1971
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "sovereign state" . ?e <nominal_GDP> ?pv_1 . ?pv_1 <pred:unit> "United States dollar" . ?pv_1 <pred:value> "2160872541.4189"^^xsd:double . ?e <total_fertility_rate> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "5.101"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <total_fertility_rate> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: nominal GDP
2160872541.4189 United States dollar
=
function: FilterConcept
dependencies: 1
inputs: sovereign state
function: QueryAttrQualifier
dependencies: 2
inputs: total fertility rate
5.101
determination method
Answer: estimation process