We compute the entailment score of S last (y) against all preceding sentences in x and y, and use the score of the sentence-pair for which we have the least confidence in a neutral classification: (6) Intuitively, we only use complete sentences because the ending of a sentence can easily flip entailment.
we carry over entailment score of the last complete sentence in a generation until the end of the next sentence, in order to maintain the presence of the entailment score in the objective.