Question: Michael Kahn (the nominee for the Tony Award for Best Direction of a Musical) was born before 1968?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Michael Kahn" . ?e <nominated_for> ?e_1 . ?e_1 <pred:name> "Tony Award for Best Direction of a Musical" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1968 ) .  }
Program:
function: Find
inputs: Tony Award for Best Direction of a Musical
function: Relate
dependencies: 0
inputs: nominated for
backward
function: Find
inputs: Michael Kahn
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1968
<
Answer: yes