Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: What is the relationship between Casey and Maggie? Title: Queen Sized Movie plot: Maggie Baker (Hairspray star Nikki Blonsky) is a very overweight 17 year old girl who suffers being taunted and ridiculed at school and badgered to lose weight by her thin mother (Annie Potts) who is worried she will get diabetes like her father who passed away a year prior to the beginning of the movie. The movie starts by showing what Maggie goes through every day at school. We discover that her best friend Casey (Lily Holleman) is not as unpopular as Maggie is due to her relationship with one of the popular guys. Casey is invited to a party by the boy and accepts the invite on the premise that Maggie is allowed to come as well. The popular boys cringe but don't say anything. At the party Casey is dragged away by her sort of boyfriend, leaving Maggie alone to be laughed at by the preppy click, including Liz (Liz McGeever), a very hated but feared girl at school. Maggie gets food down the front of her shirt and retreats to the kitchen to clean it off (only after being photographed eating in an unflattering manner). From the kitchen she can see Casey and her boyfriend making out in the adjacent hallway before her friend Louis (Fabian C. Moreno) greets her. It is clear that Louis has a thing for Maggie and vice versa. Louis leaves and Casey appears at the same time as Tara (Kimberly Matula) the sweet Queen Bee at school to wipe food off her shirt as well. Tara asks if Maggie is as clutzy as she is which Maggie confirms that she is. After she leaves Casey makes a remark about how Tara is only nice so she can win Homecoming Queen to which Maggie replies that it would be nice if she herself were to win Homecoming Queen and not somebody like Tara or her friends. Liz overhears and decides to nominate Maggie as a joke. The joke is on her though as many students get excited about Maggie being the queen, including Tara, who is, of course, nominated herself. Maggie easily collects 150 signatures to put her on the ballot (twice as they are stolen the first time around) and becomes an official nominee. Maggie starts...
The answer to this question is:
best friends