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: When blood vessels in the head dilate, a migraine, a severe headache, can occur. Sentence 2: During the headache phase of a migraine attack, there is dilation of the blood vessels surrounding the cerebral nerve endings.
entails

Sentence 1: Tetrahedral is the electron domain geometry of ammonia. Sentence 2: Thus, haptenic tetrahedral geometry is a desirable feature but not a prerequisite in generating hydrolytic antibodies.
neutral

Sentence 1: Sertoli cells cells secrete signaling molecules that promote sperm production and can control whether germ cells live or die. Sentence 2: Germ cells are reproductive cells, that is, eggs or sperm.

neutral