You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Steven_Spielberg

Context:
Spielberg has filmed and is currently in post-production on an adaptation of Roald Dahl's celebrated children's story The BFG. Spielberg's DreamWorks bought the rights in 2010, originally intending John Madden to direct. The film was written by E.T. screenwriter Melissa Mathison and is co-produced by Walt Disney Pictures, marking the first Disney-branded film to be directed by Spielberg. The BFG is set to premiere out of competition at the Cannes Film Festival in May 2016, before its wide release in the US on July 1, 2016.

Question:
Who wrote 'The BFG'?

Roald Dahl