Question: What fictional superhero created by Jerry Siegel and Joe Shuster was episode fifteen, "Solitude" of the series "Supergirl" named after?
Sentence (from "Solitude (Supergirl)"): The episode's teleplay was written by Anna Musky-Goldwyn and James DeWille, from a story by Rachek Shukert, and directed by Dermott Downs.
Relevant evidence: No