Sentence 1: Janie's sister asked her family to meet her at the arena. 
 Sentence 3: When they got there, her sister wasn't at the seats 
 Sentence 4:  When the match started, they realized her sister was in the derby 
 Sentence 5:  She had been accepted on the team but hadn't told anyone 
 Given Sentence 2: There was a roller derby match going on.