Question: Who directed the 2017 American erotic romantic drama based on E. L. James's novel that is the sequel to a 2015 American erotic romantic drama film directed by Sam Taylor-Johnson about a college graduate who begins a sadomasochistic relationship with young business magnate ? 
Sentence (from "Fifty Shades of Grey (film)"): Fifty Shades of Grey is a 2015 American erotic romantic drama film directed by Sam Taylor-Johnson, with a screenplay by Kelly Marcel.
Relevant evidence: Yes