sys-person entity is not recognizing all the names.for ex- Hema, Laxman are not recognized but names like John,Michael are easily recognized.
How to fix this problem
you cannot extend
@sys-personor any of the other system entities.
The only real method here is to also have your own entity list. I have a list called @names into which I add extra names that are not in sys-person. This also includes names that are the lowercase version of names that sys-person also does not capture ( although it does capture the same name which starts with an uppercase letter ). I have a Bug logged with the development team for additions to the names in sys-person due to this issue.
You then have to just add
@namesinto your node conditions the same as you would sys-person. . (@names || @sys-person)