Question: The 52 ranking for Cameroon's national association football team was ascertained in what manner?
Choices: de jure
United Kingdom Census 1981
Russian Empire Census
gross floor area
rated voltage
United Kingdom Census 1971
tradition
questionnaire
Sixth National Population Census of the People's Republic of China
FIFA World Rankings
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "national association football team" . ?e <country_for_sport> ?e_1 . ?e_1 <pred:name> "Cameroon" .  ?e <ranking> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "52"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <ranking> ; <pred:fact_t> ?pv ] <determination_method> ?qpv .  }
Program:
function: Find
inputs: Cameroon
function: Relate
dependencies: 0
inputs: country for sport
backward
function: FilterConcept
dependencies: 1
inputs: national association football team
function: QueryAttrQualifier
dependencies: 2
inputs: ranking
52
determination method
Answer: FIFA World Rankings