You will be given a definition of a task first, then some input of the task.
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'.

Premise: to air pollution, such as air quality monitoring and impacts of air pollutants on natural systems; 
 Hypothesis: Ash that enters the air naturally as a result of a volcano eruption is classified as a primary pollutant.
Output:
neutral