Question: Did the civil war that Joseph Stalin participated in not start in the year 500?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "civil war" . ?e_1 <conflict> ?e . ?e_1 <pred:name> "Joseph Stalin" .  ?e <start_time> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 500 ) .  }
Program:
function: Find
inputs: Joseph Stalin
function: Relate
dependencies: 0
inputs: conflict
forward
function: FilterConcept
dependencies: 1
inputs: civil war
function: QueryAttr
dependencies: 2
inputs: start time
function: VerifyYear
dependencies: 3
inputs: 500
!=