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:
1. All prizes are medals.
2. Some prizes are certificates.

Conclusions:
I. Some certificates are prizes.
II. Some medals are prizes.
III. Some certificates are medals.

All conclusions I, II and III follow.