Statements:
Some doors are windows.
All windows are beds.
Some beds are pillows.
All pillows are blankets.
Conclusions:
I. Some doors are pillows.
II. All beds may be blankets.
III. Some blankets may not be pillow.
Some doors are windows. (I) + All windows are beds. (A) ⇒ Some doors are beds. (I) + Some beds are pillows. (I) ⇒ No conclusion. Hence, conclusion I does not follows. Some beds are pillows. (I) + All pillows are blankets. (A) ⇒ Some beds are blankets. (I) ⇒ probable conclusion ⇒ All beds may be blankets. (A) Hence, conclusion II follows. All pillows are blankets. (A) ⇒ conversion ⇒ Some blankets are pillows. (I) ⇒ probable conclusion ⇒ Some blankets may not be pillow. (O) Hence, conclusion III follow.