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: As with any wave the speed of sound depends on the medium in which it is propagating. 
 Hypothesis: The speed of sound depends on medium.
entails

Premise: The cave populations have retained the capacity to produce fertile offspring with surface fish and are considered to be the same species (Avise and Selander, 1972). 
 Hypothesis: If two populations do not mate and produce fertile offspring, separate species result.
neutral

Premise: 1 gram of sugar provides 4 Kcal of energy. 
 Hypothesis: One gram of sugar or starch provides 4 calories of energy.

entails