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.

Sentence 1: To determine the atomic weight of an element, you should add up protons and neutrons. Sentence 2: The atomic weight is the number of protons and neutrons in the nucleus.
entails

Sentence 1: Around 1200 species of birds are currently at risk of extinction due to human activity. Sentence 2: Today, some 1,200 species of birds are threatened with extinction by human actions.
entails

Sentence 1: Because trees add water vapor to air, cutting down forests leads to longer periods of drought. Sentence 2: Water-use-efficiency was also greatly increased by the elevated CO 2 , thereby enabling the trees to better withstand extended periods of drought and to expand their ranges as the air's CO 2 content rises.

neutral