Next, we note that the sentences that we tested are general sentences whose components could be found in any linguistic corpus; in fact, CoreNLP's treebank does contain annotated sentences containing the "... has never ..." or "... has no ..." constructions, and so the model should correctly analyze such sentences.
we draw the conclusion that these models lack an understanding of long-term dependencies, and based on our experiments, they specifically fail to understand the c-command relation (Radford, 2004).