Assertion: steam | /r/HasProperty | developed by valve
Facets:
value: for microsoft windows
type: TRANSITIVE-OBJECT
Source sentences:
text: Steam, a large digital store-front for video games supporting many third-party developers and publishers, was developed by Valve primarily for Microsoft Windows and accounts for an estimated 75% of digitally purchased games on that platform.
text: Developed by Valve, Steam is the popular gaming platform for the PC.