Simplify the following text for a Grade 9 native English-speaking person.
Original: Leo contains many bright shining stars , such as Regulus ( also called Î Leonis ) ; the lion 's tail , Denebola ( also called Î Leonis ) ; and Î 1 Leonis ( also called Algieba ) .
Simplified: Leo contains many bright shining stars , such as Regulus ( Î Leonis ) ; the lion 's tail , Denebola ( Î Leonis ) ; and Î 1 Leonis ( Algieba ) .