novellen*

Yes.

I would argue that the correct preposition to use when reading a novella to someone would be "for". However, it's not at all uncommon for people to use "til" instead, which is why your answer was accepted here.

As long as we allow for that (and I do believe we should), the sentence is ambiguous.

'å lese til noen' = 'to read to someone' (for them to hear)
'å lese til noe' = 'to read for something' (an exam, test)

The above sentence is ambiguous without context, and it could mean either "Han leser (novellen til broren sin.)" or "(Han leser novellen) til broren sin."

When dealing with possession, you often use "til" in Norwegian where you would use "of" in English. Of course, you can also choose to use a genitive-s instead, so: "...sin brors novelle" ("his brother's novel").

"kommentaren til cape" = "cape's comment"

Because that's "roman" in Norwegian.

It's the preposition "til" that makes it a possessive, much like you could use "of" rather than a genitive s in English. You could also phrase it as "sin brors novelle".

Duo keeps a deeply flawed synonym list which we can't override. Among other things, they equate story=storey=floor, which is incorrect in most contexts and messes with our translations for "novelle", "fortelling", and "gulv".

We've complained about it for years, so I don't expect they'll change it any time soon.

I meant: He's reading his brother a short story.

This is the answer the tiles are made to form: "He is reading his brother's short story."

Of course the sentence can have your meaning as well, but word bank exercises cannot accommodate all possible translations.