4.1.2 Entailment Entailment is the relation between the two sentences under which one follows necessary from the other by the virtue of a certain semantic relation between them for example : I buy some apples entails but I buy some fruit. The rules of entailments is X entails Y If Xis true, Y is true. Also, if Y is false, Xis false. Another example I saw a boy entails I saw a child. So, in entailment it is clear that there is a semantic relation, as what the example above tells us, a boy has a semantic relation with a child but how if ; Boys of today are not respectful. Where the boys here mean men. Can we say it entails Children of today are not respectful despite they have semantic relation – both of them include the feature male human. If the problem of entailment is he problem of semantic relation, it is, of course an entailment. But according to Leech if a word is interpreted out of its conceptual meaning it is no more a logical meaning. Thus the interpretation of boys become men is not the fact that one entails the other (with children).