Thanks (also to charlieegan3) this explains the difference nicely.<p>Actually I found an educational 500 lines python parser from the same author as well [1]. It claims an accuracy of 92.7 for the WSJ corpus.<p>[1] <a href="https:&#x2F;&#x2F;spacy.io&#x2F;blog&#x2F;parsing-english-in-python" rel="nofollow">https:&#x2F;&#x2F;spacy.io&#x2F;blog&#x2F;parsing-english-in-python</a>