sentence: At first , I was not interested in it , since I did n't have any idea how to play , as I had only played basketball and volleyball . However , I did n't enjoy those two at all .
modified: At first , I 'm not interested in it , since I did n't any idea how to play , as I had only played basketball and volleyball , however , I did n't enjoy these two at all .
transformation: CONTR, VERB, PUNCT, DET