Question: How many novels did Cecelia Ahern write before "Where Rainbows End," a book made adapted into the movie "Love, Rosie?"
Sentence (from "Love, Rosie (film)"): Love, Rosie is a 2014 British-German romantic comedy-drama film directed by and written by Juliette Towhidi, based on the 2004 novel "Where Rainbows End" by Irish author Cecelia Ahern.
Relevant evidence: Yes