Question: Which country, home of the Spree and Havel rivers, did Erik Pevernagie hold an exhibition? 
Sentence (from "Erik Pevernagie"): Erik Pevernagie (born 1939) is a Belgian painter, living in Uccle/Ukkel (Brussels), who has held exhibitions in Paris, New York City, Berlin, Düsseldorf, Amsterdam, London, Brussels and Antwerp.
Relevant evidence: Yes