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"Nearly four million visitors come to Arlington National Cemetery annually. Most come to pay respect to loved ones, to honor the leaders interred here, or to thank the more than 300,000 people buried here. Learn about vacations to Arlington Cemetery."^^<http://www.w3.org/2001/XMLSchema#string>
<http://adventure.howstuffworks.com/family-vacations-arlington-national-cemetery.htm>