Definition: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Input: The Massachusetts Bay Transit Authority ( usually called the MBTA or " the T " ) is Massachusetts ' public transportation system .
Output:
The Massachusetts Bay Transportation Authority ( abbreviated MBTA and known colloquially as " the T " ) is the public agency responsible for operating most public transportation services in Greater Boston , Massachusetts .