Simplify the following text for a Grade 9 native English-speaking person.
Original: Major southern Ontario competitors include Pizza Hut , Domino 's Pizza , Little Caesars , Gino 's Pizza , 241 Pizza , Double Double Pizza , and Pizza Nova . Two other major Canadian chains , Greco and Panago , which have a presence similar to Pizza Pizza in the Atlantic and Western Canada respectively , have also recently entered the Ontario market .
Simplified: Pizza Pizza is a fast food pizza restaurant with locations throughout Ontario , Canada .