Mark `extra-phrase` position in rules

Hey @AyanSinhaMahapatra, I want more details about this, like what we want to do, like mark the named entity i.e replace with `extra-phrase` marker like `[[6]]]`. Or what we want to do. How do we proceed with these issues?
How can I start?

Also, i am doing research about this problem, what if there 3-4 named entity in rules, we can't replace this all with `extra-phrase` it may impact the matching speed that we talked about in one of the meeting.

What are your thoughts on this? How do we tackle this problem?