TASK DEFINITION: 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'.
PROBLEM: Premise: The chemical energy of foods is most often expressed in units of calories or kilocalories (kcal). 
 Hypothesis: A calorie is used to express the amount of energy in food.

SOLUTION: entails

PROBLEM: Premise: The nucleotides are strung together in pairs on two long chains and it is this pairing that forms the DNA double helix. 
 Hypothesis: Dna consists of two long chains of nucleotides.

SOLUTION: entails

PROBLEM: Premise: The four valves of the heart (pictured at left) are the tricuspid valve, the pulmonary valve, the mitral valve, and the aortic valve. 
 Hypothesis: There are four valves in the heart.

SOLUTION:
entails