sentence: I like to play football because it 's a very exciting game . It takes only 90 minutes . Whenever I get the opportunity , I play football .
modified: i would like to play football because it 's too much exciting game . in proportion to length it takes only 90 minutes . whenever i got the opportunity i played football .
transformation: ORTH, VERB:TENSE, DET, OTHER, OTHER, ORTH, ORTH, VERB:TENSE, PUNCT, ORTH, VERB:TENSE