"The artist is inside."

Translation: A művésznő bent van.

[DJJG7]

So I tried "A művész bent," thinking that in the third person the verb is not needed. But the correct answer is "A művész bent van."

Please, could someone clarify when a verb is needed and when it is not? There must be some sort of a reliable pattern, but I cannot yet discern it in the examples after 66 days. That is, the only pattern that I think I know is that the verb is not always necessary.

[vvsey]

Here it is a location thing, and "van" is necessary. When it is a characteristic of the subject (it is red, it is long, it is fast, it is cold, etc.), then "van" must be omitted.

[DJJG7]

Ever clearer! Thank you so much for the explanation!

[EsNkzo]

Would "művész" be acceptable? Does this have to be gendered?

[MrtonPolgr]

I think it is accepted.