Task: Question Generation
Input (English): In the published version of The Silmarillion, Orodreth (IPA: (orodre)) was an Elf of the First Age, the second son of Finarfin (with Finrod Felagund, Angrod, Aegnor, and Galadriel being his siblings), and a ruler of Nargothrond.
Output (English): Who is Orodreth's sister?