Question: Who is the writer of the novel based on which Lasse Hallström directed a movie  in which Lena Maria Jonna Olin appeared?
Sentence (from "Chocolat (2000 film)"): Chocolat (] ) is a 2000 British-American romantic comedy-drama film based on the novel "Chocolat" by Joanne Harris, and was directed by Lasse Hallström.
Relevant evidence: Yes