Crossword Genius

Healthy town for an inexpert driver to be in? (5)

Ross

I believe the answer is:

halle

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'in?' is the definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?

I cannot understand how the rest of the clue works.

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(Other definitions for halle that I've seen before include "Orchestra based in Manchester" , "Manchester-based orchestra" , "Noted players" , "Berry, possibly" , "Manchester's orchestra" .)

I've seen this clue in the Evening Standard.
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