Question: Which IPv6 routing prefix denotes the university headquartered in Dundee?
Choices: 2001:610:1a08::/48
2a03:b600:644::/107
2001:630:305::/48
2001:630:210::/44
2001:610:318::/48
2001:638:902::/48
2001:630:1f::/48
2001:610:310::/48
2001:630:142::/48
2a00:1c10:3:715::/64
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "university" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Dundee" .  ?e <IPv6_routing_prefix> ?pv .  }
Program:
function: Find
inputs: Dundee
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: university
function: QueryAttr
dependencies: 2
inputs: IPv6 routing prefix
Answer: 2001:630:142::/48