sentence: At some strategic points in the building , we have special trashcans to separate the garbage into organic , paper and cardboard , cans and plastic bottles and they also give talks and presentations about the earth 's problems , like global warming , pollution , etc .
modified: In some strategic points of the building we have special trashcans to separate the garbage in organic , paper and cardboard , cans and pet bottles and they also made talks and presentations about the earth problems like global warming , contamination , etc .
transformation: PREP, PREP, PUNCT, PREP, ADJ, VERB, NOUN:POSS, PUNCT, NOUN