Question: Is unix the subreddit of the operating system that is a relative of iOS?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "operating system" . ?e_1 <relative> ?e . ?e_1 <pred:name> "iOS" .  ?e <subreddit> ?pv . ?pv <pred:value> "unix" .  }
Program:
function: Find
inputs: iOS
function: Relate
dependencies: 0
inputs: relative
forward
function: FilterConcept
dependencies: 1
inputs: operating system
function: QueryAttr
dependencies: 2
inputs: subreddit
function: VerifyStr
dependencies: 3
inputs: unix
Answer: yes