sentence: Before addressing the question of what is better for young people , I would like to remind you that both activities ( spending time on a computer and watching television ) are harmful for children's / teens ' health .
modified: Before addressing the question of what is better for young people , I would like to remind that both activities ( spending time on a computer and watching television ) are harmful for children's / teen 's health .
transformation: PRON, NOUN:POSS