A well-known J.P. (5)

I believe the answer is:

getty

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'a well-known j p' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for getty that I've seen before include "John Paul - - , philanthropist" , "Malibu museum" , "Billionaire art collector" , "J.Paul - - , museum donor" .)

I've seen this clue in the Evening Standard.

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