Question: Skagboys is a 2012 novel by Scottish writer Irvine Welsh, it is a prequel to his 2002 sequel, which novel published in 2002 by Scottish writer Irvine Welsh, and is the sequel to "Trainspotting"?
Sentence (from "Porno (novel)"): Porno is a novel published in 2002 by Scottish writer Irvine Welsh, and is the sequel to "Trainspotting".
Relevant evidence: Yes