TASK DEFINITION: You are given two sentences. You have to find if there is entailment or agreement of the Hypothesis by the Premise. From the given pair of sentences, you should identify if there is enough information in the Premise to support the claim made in the Hypothesis. The Premise may not exactly be the same as Hypothesis. Your task is to return 'entails' if the premise supports hypothesis else return 'neutral'.
PROBLEM: Premise: In general there are four major classes of compounds that comprise most biological materials. 
 Hypothesis: There are four classes of biochemical compounds.

SOLUTION: entails

PROBLEM: Premise: Hazardous air pollutants come from natural sources such as forest fires and volcanoes and from human sources, both stationary and mobile. 
 Hypothesis: Ash that enters the air naturally as a result of a volcano eruption is classified as a primary pollutant.

SOLUTION: neutral

PROBLEM: Premise: For instance, crocodilians have an anatomically four-chambered heart that is capable of becoming a functionally three-chamber heart during dives (Mazzotti, 1989 pg 47). 
 Hypothesis: There are three chambers in an amphibian heart.

SOLUTION:
neutral