Generate a question that has the following answer: UNNAMED WOMAN for the following movie plot: Brandon (Michael Fassbender) is a successful, handsome thirty-something businessman living and working in New York City. Unknown to those who know him, he's struggling with a sexual addiction. On a subway train he flirts with a young woman (Lucy Walters) and she flirts back with him. She has a wedding and engagement ring on, and when they exit the train, she disappears into the crowd.After work, Brandon and his boss David (James Badge Dale) go out and meet three women at a club. Later Brandon has sex with the woman David was trying to pursue.When Brandon arrives home, he assumes a burglar is in his house but finds a naked woman taking a shower: it is in fact his sister Sissy (Carey Mulligan), a troubled young woman who has been left as damaged as Brandon by their troubled childhood, which is never completely revealed. Sissy tells Brandon that she has been living in Los Angeles for the past year and performing as a singer in local clubs. Having fallen on hard times, Sissy claims that she has no place to live and asks if she could stay with him for a while. Brandon reluctantly agreesThe next evening, Brandon and David watch Sissy singing a beautifully sad jazz version of New York, New York at a club. Afterwords, Sissy sits with Brandon and David at their table where she talks a little more about herself and her singing career before. After a casual talk over drinks, they all go back to Brandon's apartment. While Brandon checks his mail in the lobby, Sissy and David go up to his apartment. When Brandon arrives, he hears Sissy having sex with David through the bedroom door, in his bed.Brandon leaves his apartment and runs on the streets while listening to Bach's piano music on his earphones. Brandon comes back home and sees that Sissy and David are gone. He changes the bedsheats and quickly goes to bed. A little later that night, he is annoyed by Sissy's presence who climbs into bed and wants to cuddle next to him. Brandon yells at her to go back to sleep on the couch and she leaves him alone.At work, Brandon...
Answer:
With whom is Brandon seen having sex immediately after Marianne leaves?