Question: What language is associated with the official language of the official website of the US city of Waltham located at http://www.city.waltham.ma.us/?
Choices: Swedish
Belgian French
Tahitian
English
Croatian
German
Galician
Chinese
Slovak
Irish
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e <official_name> ?pv_1 . ?pv_1 <pred:value> "Waltham" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.city.waltham.ma.us/" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <language_of_work_or_name> ?qpv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official name
Waltham
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: QueryAttrQualifier
dependencies: 2
inputs: official website
http://www.city.waltham.ma.us/
language of work or name
Answer: English