Question: How many operating systems were influenced by iOS or made after 1991?
Choices:
2
3
4
5
6
7
8
9
10
11
Answer: 3
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "operating system" .  { ?e <influenced_by> ?e_1 . ?e_1 <pred:name> "iOS" .  } UNION { ?e <inception> ?pv . ?pv <pred:year> ?v . FILTER ( ?v > 1991 ) .  } }
Program:
function: Find
inputs: iOS
function: Relate
dependencies: 0
inputs: influenced by
backward
function: FilterConcept
dependencies: 1
inputs: operating system
function: FindAll
function: FilterYear
dependencies: 3
inputs: inception
1991
>
function: FilterConcept
dependencies: 4
inputs: operating system
function: Or
dependencies: 2
5
function: Count
dependencies: 6