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'.
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Question: Premise: Its cells are motile and possess one subterminal sheathed flagellum at each end. 
 Hypothesis: In humans, the sperm cell is the only cell with the  flagella structure that enables motility.

Answer: neutral


Question: Premise: In the case of carbon dioxide, two atoms of oxygen combine with one atom of carbon. 
 Hypothesis: Carbon dioxide molecules consist of a central carbon atom bonded to two oxygen atoms.

Answer: entails


Question: Premise: Four valves assist with the flow of blood through the heart. 
 Hypothesis: There are four valves in the heart.

Answer:
entails