Question: When did The Phantom of the Opera (the one whose director is Lon Chaney) receive the National Film Registry?
Choices: 1978
2010-02-11
1910
1576-01-01
2003-06-26
1501
2016-03-01
1840-12-01
1998-01-01
1834-12-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "The Phantom of the Opera" . ?e_1 <director> ?e_3 . ?e_3 <pred:name> "Lon Chaney" . ?e_2 <pred:name> "National Film Registry" . ?e_1 <award_received> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <award_received> ; <pred:fact_t> ?e_2 ] <point_in_time> ?qpv .  }
Program:
function: Find
inputs: Lon Chaney
function: Relate
dependencies: 0
inputs: director
backward
function: Find
inputs: The Phantom of the Opera
function: And
dependencies: 1
2
function: Find
inputs: National Film Registry
function: QueryRelationQualifier
dependencies: 3
4
inputs: award received
point in time
Answer: 1998-01-01