Original sentence: In response to a 2007 mall shooting in Omaha, officials of Empire Mall (which Kelo.com then reported as being the largest tourist attraction in the state, with seven million visits annually) assured visitors of sufficient security to address a similar event
Edited sentence: Empire Mall is a huge tourist attraction in South Dakota, with more than seven million visitors annually.Opened in 1975, the mall comprises more than 164 stores in  of retail space, including five anchor stores (Dick's Sporting Goods, JCPenney, Macy's [originallly Dayton's and later Marshall Field's], and Dillard's [soon to open in a former Younkers], with one vacant anchor last occupied by Sears) and a food court