Question: Does the person born on 1949-07-09 have no children?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <date_of_birth> ?pv_1 . ?pv_1 <pred:date> "1949-07-09"^^xsd:date . ?e <number_of_children> ?pv . ?pv <pred:unit> "1" . ?pv <pred:value> ?v . FILTER ( ?v != "0"^^xsd:double ) .  }
Program:
function: FindAll
function: FilterDate
dependencies: 0
inputs: date of birth
1949-07-09
=
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: number of children
function: VerifyNum
dependencies: 3
inputs: 0
!=