Question: Did the 1999 Tony winner for Best Actor in a Play begin working in 1977 ?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <award_received> ?e_1 . ?e_1 <pred:name> "Tony Award for Best Actor in a Play" .  [ <pred:fact_h> ?e ; <pred:fact_r> <award_received> ; <pred:fact_t> ?e_1 ] <point_in_time> ?qpv . ?qpv <pred:year> 1999 . ?e <work_period_(start)> ?pv . ?pv <pred:year> 1977 .  }
Program:
function: Find
inputs: Tony Award for Best Actor in a Play
function: Relate
dependencies: 0
inputs: award received
backward
function: QFilterYear
dependencies: 1
inputs: point in time
1999
=
function: FilterConcept
dependencies: 2
inputs: human
function: QueryAttr
dependencies: 3
inputs: work period (start)
function: VerifyYear
dependencies: 4
inputs: 1977
=
Answer: yes