Question: What is the language of the official website of a research institute located in Princeton, http://www.ias.edu?
Choices: Toki Pona
English
Portuguese
Catalan
Tlingit
Czech
Breton
National language of Republic of China
Bulgarian
ǀXam language
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "research institute" . ?e <located_in_the_administrative_territorial_entity> ?e_1 . ?e_1 <pred:name> "Princeton" .  ?e <official_website> ?pv . ?pv <pred:value> "http://www.ias.edu/" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <language_of_work_or_name> ?qpv .  }
Program:
function: Find
inputs: Princeton
function: Relate
dependencies: 0
inputs: located in the administrative territorial entity
backward
function: FilterConcept
dependencies: 1
inputs: research institute
function: QueryAttrQualifier
dependencies: 2
inputs: official website
http://www.ias.edu/
language of work or name
Answer: English