Question: When did Middlesex County ((the one that has the captital Lowell) have a population of 15046448?
Choices: 1944-03-02
1895-12-01
1755-12-01
2018-04-13
2010-07-01
2009-01-25
2013-01-11
1972-04-10
1650
1977-11-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Middlesex County" . ?e <capital> ?e_1 . ?e_1 <pred:name> "Lowell" .  ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "1506448"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Program:
function: Find
inputs: Lowell
function: Relate
dependencies: 0
inputs: capital
backward
function: Find
inputs: Middlesex County
function: And
dependencies: 1
2
function: QueryAttrQualifier
dependencies: 3
inputs: population
1506448
point in time
Answer: 2010-07-01