Question: Café Griensteidl was a traditional Viennese café located at Michaelerplatz 2, at the Hofburg Palace in the Innere Stadt first district of Vienna, Austria, during the early twentieth century, the café was frequented by many artists, musicians, and writers, including who, which was an Austrian author and dramatist?
Sentence (from "Café Griensteidl"): In 1990, the café was reopened and became a popular location among the Viennese coffeehouse culture.
Relevant evidence: No