The lastly ordered setence r belongs to document D in which a block K of sentences follows r. The author of this document assumes that K is a natural consequence of r. However, the sentence selection algorithm might not have selected any sentences from K because it already selected some sentences with this information from some other document.
we search the extract L for a sentence that best matches with a sentence in K. We define succession as a measure of this agreement(13) as follows: Here, we calculate sim(l, k) using cosine similarity.