Assume the statements are true.

Statements: Some rivers are canals. All canals are streams. No stream is a pond.

Conclusions:

I. Some rivers are not ponds.

II. No canal is a pond.

Explanation

1. 01

   Every canal is a stream and no stream is a pond, so no canal is a pond: II follows.

2. 02

   The rivers that are canals are therefore not ponds, so some rivers are not ponds: I follows.

3. 03

   Both I and II follow.