Question: What is the U.S. city whose official website is http://www.cityofcharleston.org?
Choices: Aurora
New Haven
Waukegan
Lawrence
Charleston
Columbus
Galveston
Long Branch
Covington
Albany
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.cityofcharleston.org" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.cityofcharleston.org
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: What
dependencies: 2
Answer: Charleston