Sentence 1: I was visiting a festival with some friends when we heard gunshots. 
 Sentence 3: She claimed it was her boyfriend but he was already on the ground 
 Sentence 4:  She bragged on him but her co-workers doubted her 
 Sentence 5:  She admitted the truth but her embarrassment cost us our friendship 
 Given Sentence 2: He didn't hear her at all since he was wearing his headphones.