Conversation so far:
when did the first fifty shades of grey book come out
Fifty Shades of Grey was published 20 June 2011.
what genre is the book Fifty Shades of Grey
Fifty Shades of Grey is a 2011 erotic romance novel.
who wrote the book Fifty Shades of Grey
Fifty Shades of Grey is a 2011 erotic romance novel by British author E. L. James.
how many pages is the book Fifty Shades of Grey
Fifty Shades of Grey is 514 pages.

Question: what is the sequel called
Self-contained rewrite: what is the sequel to Fifty Shades of Grey called