sentence: At present , I have three kinds of birds . One of them is a yellow canary , the second one is a finch , and the third one is a combination of two kinds of birds . Each bird has its own special voice .
modified: At present , I have three kinds of birds , one of them is yellow canary , the second one is finch , and the third one is combination of two kinds of birds , Each bird has his own special voice .
transformation: PUNCT, DET, DET, DET, PUNCT, DET