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

[EX Q]: Because carbon has four valence electrons, one in each of the four pairs, it is more willing to share electrons with another atom (rather than grabbing them or giving them up).
[EX A]: Four valence electrons can be found in a carbon atom.

[EX Q]: Gamma radiation is generated by radioactivity, the decay of radioactive (unstable) atoms both in Earth's crust and in the atmosphere, and in reactions caused by cosmic ray collisions with atmospheric constituents, as well as by the decay of elementary particles produced by these collisions.
[EX A]: Radioactive atoms, nuclear explosions, and stars produce gamma rays

[EX Q]: Alone among the planets, the surface temperatures of Earth allow water to exist in all three states, solid (ice), liquid (water), and gas (water vapor).
[EX A]:
Water exists on earth in three matter states states.

