In this task, you are given two statements. The task is to output whether a given textual premise, i.e. Statement 2, entails or implies a given scientific fact, i.e. Statement 1. The output should be 'entails' if Statement 2 supports Statement 1 and should be 'neutral' otherwise.

Q: Sentence 1: Valence is the term for the number of covalent bonds an atom can form. Sentence 2: The total number of bonds formed by an atom is called the valence of the atom.

A: entails
****
Q: Sentence 1: All of the land drained by a river system is called its basin, or the "wet" term  watershed Sentence 2: Watersheds and divides All of the land area whose water drains into a stream system is called the system's watershed.

A: entails
****
Q: Sentence 1: Carefully controlling the speed of a fission reaction produces nuclear kind of energy. Sentence 2: Under this definition, the only nuclides that are fissionable are those nuclides that can be made to undergo nuclear fission but produce insufficient neutrons, in either energy or number, to sustain a nuclear chain reaction.

A:
neutral
****