Question: Is the release date for Christopher Columbus (whose title is Christoph Columbus) prior to the year 2013?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Christopher Columbus" . ?e <title> ?pv_1 . ?pv_1 <pred:value> "Christoph Columbus" . ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 2013 ) .  }
Program:
function: Find
inputs: Christopher Columbus
function: FilterStr
dependencies: 0
inputs: title
Christoph Columbus
function: QueryAttr
dependencies: 1
inputs: publication date
function: VerifyYear
dependencies: 2
inputs: 2013
<
Answer: yes