Question: What is the date of publication of For Friends, featuring Lena Olin as a cast member?
Choices:
1996-04-10
1976-12-25
2003-06-12
1975-03-06
1980-09-29
1988-01-01
2005-06-09
1968-11-12
2011-10-12
1986-07-18
Program:
function: Find
inputs: Lena Olin
function: Relate
dependencies: 0
inputs: cast member
backward
function: Find
inputs: Friends
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Friends" . ?e <cast_member> ?e_1 . ?e_1 <pred:name> "Lena Olin" .  ?e <publication_date> ?pv .  }
Answer: 1988-01-01