Question: Is http://www.busterkeaton.com the official website of Frank Vincent, whose date of birth is 1937-04-15?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Frank Vincent" . ?e <date_of_birth> ?pv_1 . ?pv_1 <pred:date> "1937-04-15"^^xsd:date . ?e <official_website> ?pv . ?pv <pred:value> "http://www.busterkeaton.com" .  }
Program:
function: Find
inputs: Frank Vincent
function: FilterDate
dependencies: 0
inputs: date of birth
1937-04-15
=
function: QueryAttr
dependencies: 1
inputs: official website
function: VerifyStr
dependencies: 2
inputs: http://www.busterkeaton.com
Answer: no