Question: For the city whose dantai code is 422011, what is the time point of its population of 419728?
Choices:
1857-01-01
2018-03-01
1350-01-01
1780
2017-01-01
-1000
1924-01-01
1671-01-01
2016-11-30
1787-01-01
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: dantai code
422011
function: FilterConcept
dependencies: 1
inputs: city
function: QueryAttrQualifier
dependencies: 2
inputs: population
419728
point in time
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city" . ?e <dantai_code> ?pv_1 . ?pv_1 <pred:value> "422011" . ?e <population> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> "419728"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <population> ; <pred:fact_t> ?pv ] <point_in_time> ?qpv .  }
Answer: 2018-03-01