Marking a phrase or sentence for tracking

I’m needing to track four topics in a document. One is a character’s dialogue, another is the laws they give out. Is there a way to keyword/tag/something a few words throughout each document and track them with different topic markers of some kind?

To what depth do you need to Track? that the character is speaking in a document or what they actually say? same with laws. That a law was given or the actual law?

You could use metadata fields. I have one metadata field called “Spells” and I type in the names of the spells cast (if any) in the scene. I also use a custom metadata list so I can check the names of the characters in the scene.