Stanford Core NLP - understanding coreference resolution

Question

I\'m having some trouble understanding the changes made to the coref resolver in the last version of the Stanford NLP tools. As an example, below is a sentence and the corre

Answer 1

These are the recent results from the annotator.

1. [1, 1] 1 The atom
2. [1, 2] 1 a basic unit of matter
3. [1, 3] 1 it
4. [1, 6] 6 negatively charged electrons
5. [1, 5] 5 a cloud of negatively charged electrons

The markings are as follows :

[Sentence number,'id']  Cluster_no  Text_Associated

The text belonging to the same cluster refers to the same context.