Simplify the following text for a Grade 4 native English-speaking person.
Original: Lake MÃ laren ( historically occasionally referred to as Lake Malar in English ) is the third-largest lake in Sweden , after Lakes VÃ nern and VÃ ttern .
Simplified: Lake MÃ laren is the third largest lake in Sweden after Lakes VÃ nern and VÃ ttern .