premise: Carla has visited Little Falls, Seward, Montrose, Easton, Woods Hole, Portland, Opelika, Iron Mountain, Kirksville, Boca Raton, Bronx, Raleigh, Biloxi, Monroeville, Great Barrington, Cambridge, La Junta, Richardson, Norfolk, Danville, Fort Scott, Boothbay Harbor, Salem, Greensboro, Alva, Watertown, Portsmouth, Plattsburgh, Wichita Falls, Cody and Titusville
hypothesis: Carla has visited more than thirty places