Question: When did a natural language, whose IETF language tag is fa, reach 52,939,220 speakers ?
Choices: 1738-01-01
1975-05-01
2015-05-01
1912
1944-10-21
2015
2012-01-31
2006-02-08
1986-01-01
1999-03-21
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "natural language" . ?e <IETF_language_tag> ?pv_1 . ?pv_1 <pred:value> "fa" . ?e <number_of_speakers> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "52939220"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <number_of_speakers> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: IETF language tag
fa
function: FilterConcept
dependencies: 1
inputs: natural language
function: QueryAttrQualifier
dependencies: 2
inputs: number of speakers
52939220
point in time
Answer: 2015