Question: What Californian county uses English-language http://www.contracosta.ca.gov as the official website ?
Choices: Orange County
San Mateo County
Alameda County
San Diego County
Tulare County
Tuolumne County
Butte County
Solano County
Contra Costa County
Santa Barbara County
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of California" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.contracosta.ca.gov" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <language_of_work_or_name> ?qpv . ?qpv <pred:value> "English" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.contracosta.ca.gov
function: QFilterStr
dependencies: 1
inputs: language of work or name
English
function: FilterConcept
dependencies: 2
inputs: county of California
function: What
dependencies: 3
Answer: Contra Costa County