You are given a sentence and your task is to generate another sentence that supports the given input.

Let me give you an example: In spite of this reduced heat input, the surface temperature of Venus is higher than that of the Earth.
The answer to this example can be: Venus has a warmer average surface temperature than earth.
Here is why: Output statement supports the input statement's claim about the temperatures of Venus being higher than the earth.

OK. solve this:
Each water molecule contains 3 atoms, 2 of hydrogen and 1 of oxygen.
Answer:
Water contains 3 atoms.