Read the given statements 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 statements.

Statements:
I. Some men are animals.
II. All trees are rivers.
III. All animals are trees.

Conclusions:
I. Some men are rivers.
II. All rivers are animals.
III. All rivers are men.
IV. All men are trees.