Sentence 1: Today I was on a conference call with three other people. 
 Sentence 3: I forgot to press the mute button, so everyone on the call heard me 
 Sentence 4:  They started asking what that noise was 
 Sentence 5:  I lied and said someone's car had backfired in the parking lot 
 Given Sentence 2: I was alone in my office, so I let some farts rip.