Statements:
All hammers are stones.
No stone is ring.
Some rings are doors.
All doors are windows.
Conclusions:
I. Some windows are hammers.
II. Some windows are rings.
III. No window is hammer.
IV. Some rings are hammers.
Only I follows
Only II follows
Only III follows
Only either I or III follows
Only either I or III and II follow
Only either I or III and II follow