Simplify the following text for a Grade 12 native English-speaking person.
Original: After the Hillsborough disaster in 1989 and the subsequent outcome of the Taylor Report in 1990 , the stadium was converted to all-seater with three of the corners being filled , the corner between the Barclay and the Jarrold stands being a hotel .
Simplified: After a disaster at Sheffield Wednesdayâ s ground Hillsborough in 1989 and , afterwards , the outcome of the Taylor Report in 1990 , the stadium was converted to all-seater with the corners being filled .