Sentence 1: Billy kept crying in his room every day. 
 Sentence 3: Billy revealed that he was depressed all the time 
 Sentence 4:  Billy saw a therapist and discovered he was clinically depressed 
 Sentence 5:  Billy is on medication and is happier than he's ever been 
 Option 1: His mom noticed it and asked him why. 
 Option 2: No one noticed he was crying.