premise: The family of Macintosh operating systems developed by Apple Inc. includes the graphical user interface-based operating systems it has designed for use with its Macintosh series of personal computers since 1984, as well as the related system software it once created for compatible third-party systems.
hypothesis: Macintosh is a business that owns Apple Inc.
reason: Macintosh was developed by Apple, it does not own Apple. System probably doesn't understand the difference between businesses and systems.