instruction:
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'.
question:
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.
answer:
neutral


question:
Premise: Many lizards display four limbs but there are certain skink species that are completely limbless. 
 Hypothesis: Birds have four limbs.
answer:
neutral


question:
Premise: Reproductive isolation is a collection of mechanisms, behaviors, and physiological processes that prevent the members of two different species that cross or mate from producing offspring, or which ensure that any offspring that may be produced is not fertile. 
 Hypothesis: If two populations do not mate and produce fertile offspring, separate species result.
answer:

neutral