Deletion of Mark Prent

Comment: Extensive critical review herehttp://www.ccca.ca/c/writing/g/greenwood/gre011t.html and film documentary herehttp://www.roland-collection.com/rolandcollection/section/20/637.htm. Some more refs may need to be cited since just citing commercial "solo exhibitions" may not meet . Commercial "solo exhibitions" is something most artists do.  sets a level higher than that, namely: "permanent collections of several notable galleries, museums or internationally significant libraries". Commercial gallery solo exhibitions are not permanent by definition. The museum level exhibitions must have a record somewhere. Article needs cleanup since there is a  problem. The primary editor needs to read that guideline and try to adhere to it. The current article simply does not put forward the "gist" I get from the cited critical review (especial in the lead
Stance: keep
Cited policy: Wikipedia:Notability (WP:BIO||WP:COI)