Question: Who directed the comedy film which was written by Tina Fey and based on a book by American parenting educator Rosalind Wiseman?
Sentence (from "Baby Mama (film)"): Baby Mama is a 2008 American romantic comedy film written and directed by Michael McCullers in his directorial debut and starring Tina Fey, Amy Poehler, Greg Kinnear, Dax Shepard, Steve Martin, and Sigourney Weaver.
Relevant evidence: No