sentence: I think the reason why I did n't know about the explosion is because this part where I live is a very poor area and it 's not that beautiful , so you ca n't distinguish where the explosion hit .
modified: I think the reason why I did n't know about the explosion is because this part where I live is a very poor area and it 's not that beautiful so you ca n't distinguish were does the explosion hit .
transformation: PUNCT, ADV, VERB