Some statement issued by benefactor of art (4)
I believe the answer is:
tate
'benefactor of art' is the definition.
(Tate museum institution)
'some statement issued' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'TATE' is hidden in the letters of 'statement issued'.
'by' acts as a link.
(Other definitions for tate that I've seen before include "famous art gallery beside London's Thames" , "Gallery (or two!)" , "Art gallery benefactor" , "Modern and Britain galleries in London" , "he backed Sugar Cube" .)