Question: How  many operating system were developed by Ryanair ?
Choices:
0
1
2
3
4
5
6
7
8
9
Answer: 0
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "operating system" . ?e <developer> ?e_1 . ?e_1 <pred:name> "Ryanair" .   }
Program:
function: Find
inputs: Ryanair
function: Relate
dependencies: 0
inputs: developer
backward
function: FilterConcept
dependencies: 1
inputs: operating system
function: Count
dependencies: 2