Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Things to Do Before You're 30 is set in Greenwich, London with a large ensemble cast including Dougray Scott, Emilia Fox, Billie Piper, Jimi Mistry, Shaun Parkes, Bruce Mackinnon, George Innes, George Irving, Rosie Cavaliero, Nina Young, Danny Nussbaum, David Paul West & Neil McGuinness.
Answer : London
Which place does Things to Do Before You're 30 exist in?