57% knows the answer to this question: "In the song "Row, Row, Row Your Boat," where are you rowing your boat so merrily? "

And do you know the answer to this one? "Douglas More's opera, "Gallantry," begins with an ad for Lochinvar Soap and opens in a hospital hallway. What is the opera's subtitle?"

30% knows the answer to this question: "The last American troops left what Asian nation in 1975? "

And do you know the answer to this one? "In 1972, American Bobby Fischer became world champion in what game?"

41% knows the answer to this question: "You can find Great Salt Lake at which location? "

And do you know the answer to this one? "The Everglades is a large area of swampland in which US state?"

61% knows the answer to this question: "Who sang the famous song One Of Us (1981)? "

And do you know the answer to this one? "Who sang the famous song Estoy Aqui (1995)? "

55% knows the answer to this question: "Who sang the famous song ”All Night Long (All Night)” (1983)? "

And do you know the answer to this one? "Who sang the song "Everybody (Backstreet's Back)"?"

41% knows the answer to this question: "Which of these Greek gods was a patron of a major city? "

And do you know the answer to this one? "President Jean-Claude Duvalier fled what country after years of family rule?"

44% knows the answer to this question: "In 1980, Vigdis Finnbogadottir was Iceland's first President who was also what? "

And do you know the answer to this one? "What year did the historical event, "Hemingway pens For Whom the Bell Tolls", occur?"

31% knows the answer to this question: "In 1773, colonists boarded three East India Company ships and destroyed their tea cargo by throwing it into Boston Harbor. What is this event known as today? "

And do you know the answer to this one? "In 2013, a deadly train wreck took place in which country's Santiago de Compostela?"

74% knows the answer to this question: "What were the persistent air attacks on London during World War II called? "

And do you know the answer to this one? "Aphrodite was the Greek goddess of what?"

79% knows the answer to this question: "Which of these held up buildings in Ancient Rome and Greece? "

And do you know the answer to this one? "About what did a U.N. panel give a dire forecast in 2007?"

89% knows the answer to this question: "What symbol separates dollars from cents in money? "

And do you know the answer to this one? "Baron Carl-August von Gablenz founded Lufthansa. Ironically enough, how did he die?"

33% knows the answer to this question: "Africa is the continent that has more of which of these than any other? "

And do you know the answer to this one? "In late 2004, Viktor Yushchenko was the subject of an assassination attempt that left him disfigured. What country is he the former president of?"