Question: When the world (Earth) had a population of 3021475000?
Choices: 1885-01-01
1925-10-01
1947-12-31
1860-01-01
2014-09-20
1923-01-01
2013-09-12
1960-01-01
2004-04-14
2010-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Earth" . ?e_1 <said_to_be_the_same_as> ?e . ?e_1 <pred:name> "world" .  ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "3021475000"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Program:
function: Find
inputs: world
function: Relate
dependencies: 0
inputs: said to be the same as
forward
function: Find
inputs: Earth
function: And
dependencies: 1
2
function: QueryAttrQualifier
dependencies: 3
inputs: population
3021475000
point in time
Answer: 1960-01-01