Statements: All flowers are books.
All books are carpets.
Some carpets are keys.
Some keys are locks.
Conclusions:I. Some keys are books.
II. Some keys are flowers.
III. Some locks are books.
All books are carpets(A) + Some carpets are keys(I) ⇒ No conclusion. Hence conclusion I does not follow. All flowers are books(A) + All books are carpets(A) ⇒ All flowers are carpets(A) + Some carpets are keys(I) ⇒ No conclusion. Hence neither conclusion II nor III follows.