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: The combustion of propane gas produces carbon dioxide and water vapor. Sentence 2: Perfect combustion of propane yields water, carbon dioxide &amp; heat.
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: Many free charges is the drift velocity negligible. Sentence 2: A smoke-free area is an area where no smoking occurs and where the drift of smoke from smoking areas is negligible.

neutral