Question: Since when has the province of China with the ISO 3166-2 of CN-HE had the official name of 河北省?
Choices: 2003-08-02
1997-05-02
1728-01-01
1961-10-27
1928
1983-08-15
1876
2013-04-18
2003-08-01
1639
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "province of China" . ?e <ISO_3166-2_code> ?pv_1 . ?pv_1 <pred:value> "CN-HE" . ?e <official_name> ?pv . ?pv <pred:value> "河北省" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_name> ; <pred:fact_t> ?pv ] <start_time> ?qpv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: ISO 3166-2 code
CN-HE
function: FilterConcept
dependencies: 1
inputs: province of China
function: QueryAttrQualifier
dependencies: 2
inputs: official name
河北省
start time
Answer: 1928