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'.
Input: Premise: However, elevated levels of acidity result when the primary air pollutants, sulphur dioxide and nitrous oxide, enter the atmosphere at disproportionately high rates (due primarily to the burning of fossil fuels), and react to form secondary air pollutants. 
 Hypothesis: Ash that enters the air naturally as a result of a volcano eruption is classified as a primary pollutant.
Output:
neutral