Question: Which US city's official website is http://www.cityofdavenportiowa.com?
Choices:
Louisville
Waukegan
Concord
Eugene
New Haven
Santa Barbara
San Mateo
Columbus
Franklin
Davenport
Answer: Davenport
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.cityofdavenportiowa.com" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.cityofdavenportiowa.com
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: What
dependencies: 2