Question: Princess Stephanie of Windisch-Graetz, was the daughter of Prince Otto Weriand of Windisch-Graetz, and was the only child of Rudolf, Crown Prince of Austria and Princess Stéphanie of Belgium?
Sentence (from "Princess Stephanie of Windisch-Graetz"): She was the great-grandchild of Emperor Franz-Joseph and Empress Elisabeth ('Sissi') of Austria.
Relevant evidence: No