Read the given statement(s) and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statement(s).

Statements:
Some ships are cups.
No cup is a stool.
All windows are cups.

Conclusions:
I. Some ships being windows is a possibility.
II. No window is a stool.
III. All cups are windows.
IV. No ship is a stool.