Premise: Kaitlin Olson . She began her career in the Groundlings , an improvisational group in Los Angeles , California , and had minor roles in several television series before being cast as Deandra `` Sweet Dee '' Reynolds on the FX black comedy series It 's Always Sunny in Philadelphia in 2005 .
Hypothesis: It's Always Sunny in Philadelphia in 2005 had Kaitlin Olson as part of the cast.
Label: ENTAILMENT