Question: When was Harry Potter and the Philosopher's Stone released for PlayStation 2 published?
Choices: 1999-09-17
1999-10-31
2004-01-16
1990-02-23
2000-08-03
2003-10-31
2001-11-15
2008-06-13
1995-11-07
2011-02-08
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Harry Potter and the Philosopher's Stone" . ?e <platform> ?e_1 . ?e_1 <pred:name> "PlayStation 2" .  ?e <publication_date> ?pv .  }
Program:
function: Find
inputs: PlayStation 2
function: Relate
dependencies: 0
inputs: platform
backward
function: Find
inputs: Harry Potter and the Philosopher's Stone
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date
Answer: 2001-11-15