Teacher: 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'.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Premise: Lyme Disease is caused by a bacterium that's transmitted by tick bite, but many infected people don't remember a bite. 
 Hypothesis: Lyme disease is caused by bacteria.
Solution: entails
Reason: The premise sentence agrees with the hypothesis that Lyme Disease is a bacterium. The premise also gives additional information about Lyme disease. Therefore Premise entails Hypothesis.

Now, solve this instance: Premise: 137 Cs (half-life 30 years) became the first long-lived isotope related to nuclear fallout intensively studied in aquatic organisms. 
 Hypothesis: The long-lived isotopes require thousands of years to decay to a safe level in a nuclear reactor.
Student:
neutral