premise: The Brat Pack is only a nickname given to a group of old actors who appeared together in films.
hypothesis: The Brat Pack is a nickname given to a group of young actors who frequently appeared together in teen-oriented coming-of-age films in the 1980s . The `` Frat Pack '' is a nickname given to a group of comedy actors who have appeared together in many of the highest-grossing comedy movies since the mid-1990s .