The entity &apostrophe; contains apostrophe-like characters that are not English.
Thus, in the sentence that follows s is tagged as a verb:
Where`s Bill?
The grammar rule NON_STANDARD_WORD finds Where`s and suggest a straight apostrophe or a curly apostrophe.
What is the purpose of using the entity &apostrophe; in a pattern in disambiguation if it causes a rule to apply a POS to text that is not correct English?