Question: Which event held in Alberta, Canada, which bills itself as The Greatest Outdoor Show on Earth, is a large festival, exhibition, and rodeo held for 10 days every summer in July, attracts more than 1.2 million visitors?
Answer: Calgary stampede; Calgary Exhibition and Stampede; Rangeland derby; Calgary Stampede Parade; Calgary Stampede and Exhibition; Calgary Stampede; Stampede Park; Calgary Stampede Rodeo; The Calgary Stampede; The Greatest Outdoor Show on Earth