Discovering Ontologies, or *gulp* Making My Own

Hello,

I am looking to find an ontology for annotating fiction. I'd like to be
able to record both facts with annotations e.g.:

HarryPotter livesAt "4 Privet Drive, Little Whinging, Surrey" // Harry
Potter and the Philosophers Stone (biblio data...) page 1

and artistic  / textual criticism notes:

InfiniteJest beautifulPassage  "He could just hunker down in the space
between each heartbeat and make each heartbeat a wall and live in there.
Not let his head look over. What’s unendurable is what his own head could
make of it all." // Infinite Jest (biblio data) page ...

So as to enable searches like:

"How many Gryffindors played Quidditch and where were these facts recorded?"

or

"Who were the victims of The Entertainment in Wallace's _Infinite Jest_?"

and

"What are your favorite parts of _Infinte Jest_?"

Questions

1. Is there an ontology for describing such relationships? I've searched
and not found anything. I've searched lists
<https://wiki.base22.com/btg/semantic-web-ontologies-and-vocabularies-35487842.html>
of ontologies in W3C sites but have not found anything promising.
2. If it's generally agreed that I've looked well and have not found
anything, then I would like to try my hand at making the ontology. This is
scary. I can't really tell if I need OWL lite, OWL DL, or full OWL...and
SKOS feels underpowered to my needs.
3. Granted that I need to make use an OWL technology, it seems like the
right tooling is WebProtégé. I used the OSX client but it crashed when I
tried to save a file and since were' just munching text, a JS-based app is
probably a reasonable interface ;)
4. I was looking for steps in starting defining ontologies, but saw Maria
Keets' PDF, so that might be a good start. I had the 1st ed. of Sem Web for
working Ontologist but gave it up in a move and a foul mood but it might be
the right time to explore it again.

Thanks for any help!

Steven

-- 
Steven G. Harms