Question: What country does http://www.bbk.ac.uk/, the official website of the university whose IPv6 routing prefix is 2001:630:15::/48, belong to?
Choices: South Africa
United Kingdom
Bulgaria
Nazi Germany
Bhutan
Brazil
South Korea
Spain
Prussia
Roman Republic
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "university" . ?e <IPv6_routing_prefix> ?pv_1 . ?pv_1 <pred:value> "2001:630:15::/48" . ?e <official_website> ?pv . ?pv <pred:value> "http://www.bbk.ac.uk/" . [ <pred:fact_h> ?e ; <pred:fact_r> <official_website> ; <pred:fact_t> ?pv ] <country> ?qpv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: IPv6 routing prefix
2001:630:15::/48
function: FilterConcept
dependencies: 1
inputs: university
function: QueryAttrQualifier
dependencies: 2
inputs: official website
http://www.bbk.ac.uk/
country
Answer: United Kingdom