Definition: Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
Input: The Villa Empain is a private house in the Art Deco style designed and built between 1930 and 1934 by Swiss architect Michel Polak for Baron Louis Empain, son of Belgian industrialist Baron Edouard Empain, located in Brussels, Belgium.
Output:
Which is the kind of art style of Villa Empain?