Given the task definition and input, reply with output. Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Adelaide of Rheinfelden (or Adelaide of Swabia) (German: Adelheid) (1060s -- May 1090), was the daughter of Rudolf of Rheinfelden; and wife of King Ladislaus I of Hungary.
What is Adelaide of Rheinfelden's spouse's name?