A. Poison ivy, poison oak, and poison sumac are plants that contain an irritating, oily sap called urushiol. Urushiol triggers an allergic reaction when it comes into contact with skin, resulting in an itchy rash, which can appear within hours of exposure or up to several days later.
Vienna  is a song from Billy Joel 's 1977 album The Stranger, released as the B-side to his  She's Always a Woman  single. In a July 2008 New York Times article, Joel cited this as one of his two favorite songs, along with Summer, Highland Falls.
Its haunting theme music was played by a Viennese man, Anton Karas, on a stringed device called a zither, and the original instrument is one of the museum's exhibits, along with posters, cinema programmes from more than 30 countries, 90 different editions of the novella by Graham Greene on which his screenplay was based, and photographs of occupied Vienna and the making of the movie.