Question: What industry is followed by Windows 7?
Choices: Microsoft Windows
Brave
Windows Vista
interview
Windows XP
Android
Linux
macOS
Orange
Regina
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "industry" . ?e <followed_by> ?e_1 . ?e_1 <pred:name> "Windows 7" .   }
Program:
function: Find
inputs: Windows 7
function: Relate
dependencies: 0
inputs: followed by
backward
function: FilterConcept
dependencies: 1
inputs: industry
function: What
dependencies: 2
Answer: Windows Vista