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:
Some doctors are painters.
Some doctors are labours.
All the labours are athletes.

Conclusions:
I. Some labours are painters.
II. Some athletes are doctors.
III. All the doctors are athletes
IV. Some athletes are painters.