premise: Tammy has visited Cleburne, Topeka, Cheyenne, Amana Colonies, Fond du Lac, Greenbelt, Pine Bluff, Poughkeepsie, Mansfield, Scottsdale, Brainerd, Iowa, Georgetown, Jefferson City, Indianola, Faribault, Menlo Park, Ashland and Washington
hypothesis: Tammy has visited less than twenty-one places