Question: When did the visual artwork that has Joan Blondell as a cast member get an exploitation visa number of 49628?
Choices:
1978-08-02
1989-08-17
1992-11-04
2003-05-18
2009-09-17
1839-01-24
1964
1991-07-20
2010-02-12
2001-07-09
Program:
function: Find
inputs: Joan Blondell
function: Relate
dependencies: 0
inputs: cast member
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: QueryAttrQualifier
dependencies: 2
inputs: exploitation visa number
49628
start time
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <cast_member> ?e_1 . ?e_1 <pred:name> "Joan Blondell" .  ?e <exploitation_visa_number> ?pv . ?pv <pred:value> "49628" . [ <pred:fact_h> ?e ; <pred:fact_r> <exploitation_visa_number> ; <pred:fact_t> ?pv ] <start_time> ?qpv .  }
Answer: 1978-08-02