Simplify the following text for a Grade 9 native English-speaking person.
Original: In some traditions , the Chimera was one of the offspring of Typhon and Echidna and sister of such monsters as Cerberus and the Lernaean Hydra .
Simplified: The Chimera was one of the offspring of Typhon and Echidna and a sibling of such monsters as Cerberus and the Lernaean Hydra .