TASK 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.
PROBLEM: In cycling a time trial ( TT ) can be a single track race , or an individual time trial on the road .

SOLUTION: In cycling , for example , a time trial ( TT ) can be a single track cycling event , or an individual or team time trial on the road , and either or both of the latter may form components of multi-day stage races .

PROBLEM: The Massachusetts Bay Transit Authority ( usually called the MBTA or " the T " ) is Massachusetts ' public transportation system .

SOLUTION: 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 .

PROBLEM: A bunk bed is a stack of two or more beds .

SOLUTION:
A bunk bed is a type of bed in which one bed frame is stacked on top of another , allowing two or more beds to occupy the floor space usually required by just one .