Detailed Instructions: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
Q: In ABC 's medical drama " Grey 's Anatomy " , Leigh first appeared as a woman in Joe 's bar who was noticed by Derek Shepherd during the final two episodes of the third season , and her character is later revealed to be Lexie Grey , the younger half-sister of the titular character .
A:
In ABC 's " Grey 's Anatomy " , Leigh first appeared as a woman in Joe 's bar who was noticed by Derek Shepherd while in the third-season finale , it was revealed that she was Lexie Grey .