Question: What is the official website of the American football team that has a member named Kevin Smith (whose date of birth is 1986-12-17)?
Choices: http://www.activisionblizzard.com/
http://www.richmondindiana.gov/
http://www.detroitlions.com
http://www.burnley.gov.uk/
http://www.rcgov.org/
http://www.paulwilliamsconnection.org/
http://www.cwtv.com/shows/the-vampire-diaries
http://www.warnerbros.com/#/page=movies&pid=f-5990906c/DEMOLITION_MAN&asset=057174/Demolition_Man_-_Trailer_2&type=video/
http://www.foxsearchlight.com/ihearthuckabees/
https://www.nintendo.com/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "American football team" . ?e_1 <member_of_sports_team> ?e . ?e_1 <pred:name> "Kevin Smith" . ?e_1 <date_of_birth> ?pv_1 . ?pv_1 <pred:date> "1986-12-17"^^xsd:date . ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Kevin Smith
function: FilterDate
dependencies: 0
inputs: date of birth
1986-12-17
=
function: Relate
dependencies: 1
inputs: member of sports team
forward
function: FilterConcept
dependencies: 2
inputs: American football team
function: QueryAttr
dependencies: 3
inputs: official website
Answer: http://www.detroitlions.com