Complex sentence: This international cosplay event started in 2015 is named after the mascot Clara Cow, in Clara Cow's Cosplay Cup, or C4, teams of two cosplayers from different countries compete for the Golden Marieke statue and a week long all expenses paid trip to Japan.
Split into simpler sentences: This international cosplay event started in 2015 is named after the mascot Clara Cow. In Clara Cow's Cosplay Cup, or C4, teams of two cosplayers from different countries compete for the Golden Marieke statue and a week long all expenses paid trip to Japan.