Complex sentence: In 2016, Brown came to worldwide prominence for her role as Eleven in the Netflix science fiction drama series "Stranger Things", for which she has been nominated for the Screen Actors Guild Award for Outstanding Performance by a Female Actor in a Drama Series.
Split into simpler sentences: In 2016, Brown came to worldwide prominence for her role as Eleven in the Netflix science fiction drama series "Stranger Things". For which she was nominated for the SAG Award for Outstanding Performance by a Female Actor in a Drama Series.