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: All mammals have four limbs. Sentence 2: For example, the clade including snakes is diagnosed by the disappearance of all limbs, an advanced characteristic compared to the primitive (for the clade Tetrapoda) characteristic of having all four limbs expressed.
neutral