Question: What is the official website of the US city where Don Knotts was born?
Choices:
http://www.toothandnail.com
http://www.hamiltoncounty.com
https://fcaugsburg.de/
http://www.hartford.gov
http://www.islamabad.gov.pk
http://www.frost-nixon-lefilm.com/
http://revolutionaryroadmovie.com
http://captainamerica.marvel.com/
http://www.morgantown.com
https://www.exeter.ac.uk/
Answer: http://www.morgantown.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e_1 <place_of_birth> ?e . ?e_1 <pred:name> "Don Knotts" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Don Knotts
function: Relate
dependencies: 0
inputs: place of birth
forward
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: QueryAttr
dependencies: 2
inputs: official website