Conversation so far:
Where did Julia Louis-Dreyfus begin her early career?
As part of her comedic training, Julia Louis-Dreyfus appeared in The Second City, one of Chicago's best-known improvisational theatre groups, whose alumni include Alan Arkin and Steve Carell.

Question: Who else was part of this group?
Self-contained rewrite: Who else was part of The Second City improvisational theatre group besides Julia Louis-Dreyfus, Alan Arkin, and Steve Carell?