sentence: I 'm not certain about the date of its invention , but it must be recognized as one of the more vital tools used in society today , amongst world leaders , trading companies , and the media , as well as the entertainment world .
modified: Not certain about the date of its invention , it must be recognized as one of the more vital tools used in society today , amongst world leaders , trading companies , and the media , as well as the entertainment world .
transformation: OTHER, CONJ