Question: When did Ludwig van Beethoven (the one that has the occupation of pianist) become a student of Joseph Haydn?
Choices:
1818-12-03
1992-03-03
1792
1989-10-06
2002-09-18
2017
1812
2002-05-27
1871-01-26
2011-06-24
Answer: 1792
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Ludwig van Beethoven" . ?e_1 <occupation> ?e_3 . ?e_3 <pred:name> "pianist" . ?e_2 <pred:name> "Joseph Haydn" . ?e_1 <student_of> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <student_of> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: pianist
function: Relate
dependencies: 0
inputs: occupation
backward
function: Find
inputs: Ludwig van Beethoven
function: And
dependencies: 1
2
function: Find
inputs: Joseph Haydn
function: QueryRelationQualifier
dependencies: 3
4
inputs: student of
start time