Simplify the following text for a Grade 5 native English-speaking person.
Original: In 1995 , Tesco overtook Sainsbury 's to become the market leader , and Asda became the second largest in 2003 , demoting Sainsbury 's into third place .
Simplified: Sainsbury 's is the third biggest supermarket in the UK ( behind Tesco and Asda ) . The clothing range at Sainsbury 's has changed a lot over the years .