Why "OK" is lemmatized as "ok" while it is usually spelled as all capital in most dictionaries? And "people" at the beginning of a sentence is lemmatized as "People"

[zhanqiwang]

How to reproduce the behaviour

import spacy
nlp = spacy.load("en_core_web_sm", disable=["ner"])
s = "OK! What're your names? It's OK to say No. People like flowers."
doc = nlp(s)
print("\n".join(t.lemma_ for t in doc))

Your Environment

Info about spaCy

• spaCy version: 2.3.4
• Platform: Windows-10-10.0.19041-SP0
• Python version: 3.8.6

[svlandeg]

FYI - we converted this question to a thread on the discussion board.

We're aiming to keep the Issue tracker focused mainly on bug reports, while the new GH Discussion board can be a place where the community can come together, help eachother, discuss best practices, and so on.