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: 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.

A: entails
****
Q: Sentence 1: The cell starting meiosis is called a primary oocyte. Sentence 2: The primary oocyte, in turn, starts to  go through the first cell division of meiosis (meiosis I).

A: entails
****
Q: Sentence 1: Most scientists agree that an increase in the amount of greenhouse gases entering earth's atmosphere causes an increase in melting of polar ice caps. Sentence 2: The arctic ice is melting which is causing an increase in the amount of heat retained at the Earths poles.

A:
neutral
****