Question: Did the 2012 Sundance Film Festival not occur in 1999?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:name> "2012 Sundance Film Festival" . ?e <point_in_time> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1999 ) .  }
Program:
function: Find
inputs: 2012 Sundance Film Festival
function: QueryAttr
dependencies: 0
inputs: point in time
function: VerifyYear
dependencies: 1
inputs: 1999
!=