Question: Is Duisburg the Twitter hashtag of the big city whose area is 232.8 square kilometers?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "big city" . ?e <area> ?pv_1 . ?pv_1 <pred:unit> "square kilometre" . ?pv_1 <pred:value> "232.8"^^xsd:double . ?e <Twitter_hashtag> ?pv . ?pv <pred:value> "Duisburg" .  }
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: area
232.8 square kilometre
=
function: FilterConcept
dependencies: 1
inputs: big city
function: QueryAttr
dependencies: 2
inputs: Twitter hashtag
function: VerifyStr
dependencies: 3
inputs: Duisburg