Question: "Candy" is the debut single of an singer that starred with Diane Keaton in a 2007 romantic comedy directed by who?
Sentence (from "Because I Said So (film)"): Because I Said So is a 2007 romantic comedy film directed by Michael Lehmann and starring Diane Keaton, Mandy Moore, Lauren Graham, Piper Perabo, Gabriel Macht and Stephen Collins.
Relevant evidence: Yes