Q: 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: Unlike yellow fever (caused by a related virus and spread by the same mosquito) there is no vaccine for dengue fever. 
 Hypothesis: Dengue fever and yellow fever are examples of diseases caused by virus.
A:
entails