Question: What is the area for the city whose official website is http://www.preston.gov.uk/?
Choices: 142.22 square kilometre
29743.423459 square kilometre
226 square kilometre
10452 square kilometre
1350 square kilometre
4114.0 square kilometre
342000 square kilometre
936.0 square kilometre
1857.0 square kilometre
492 square kilometre
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.preston.gov.uk/" . ?e <area> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.preston.gov.uk/
function: FilterConcept
dependencies: 1
inputs: city
function: QueryAttr
dependencies: 2
inputs: area
Answer: 142.22 square kilometre