Question: Which language pertains to Roger Federer's official website, the creative property known as http://www.rogerfederer.com/?
Choices: English
O'odham
Slavic languages
Czech
Chinese
Breton
Maltese
Cook Islands Māori
Belarusian
Macedonian
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:name> "Roger Federer" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.rogerfederer.com/" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <language_of_work_or_name> ?qpv .  }
Program:
function: Find
inputs: Roger Federer
function: QueryAttrQualifier
dependencies: 0
inputs: official website
http://www.rogerfederer.com/
language of work or name
Answer: English