Question: What is the official language associated with Waterloo here? http://www.ci.waterloo.ia.us/
Choices: Lower Sorbian
English
Ukrainian
Bashkir
Slovak
Danish
Putonghua
Putèr
Portuguese
Valencian
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Waterloo" . ?e <country> ?e_1 . ?e_1 <pred:name> "United States of America" .  ?e <official_website> ?pv . ?pv <pred:value> "http://www.ci.waterloo.ia.us/" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <language_of_work_or_name> ?qpv .  }
Program:
function: Find
inputs: United States of America
function: Relate
dependencies: 0
inputs: country
backward
function: Find
inputs: Waterloo
function: And
dependencies: 1
2
function: QueryAttrQualifier
dependencies: 3
inputs: official website
http://www.ci.waterloo.ia.us/
language of work or name
Answer: English