Q:Information: - The Man Who Was n't There is a novel by Pat Barker , published in 1989 . It is the story of a 1950s latch - key kid and his search for a father . - The Regeneration Trilogy is a series of three novels by Pat Barker on the subject of the First World War. In 2012, "The Observer" named it as one of "The 10 best historical novels". - Patricia Mary W. "Pat" Barker CBE, FRSL (nee Drake; born 8 May 1943) is an English writer and novelist. She has won many awards for her fiction, which centres on themes of memory, trauma, survival and recovery. Her work is described as direct, blunt and plainspoken. In 2012, "The Observer" named the Regeneration Trilogy as one of "The 10 best historical novels". What entity does 'the man who wasn't there ' has the relation 'followed by' with?
A:
regeneration