Premise: Twitter ( [ ˈtwɪtər ] ) is an online news and social networking service where users post and interact with messages , `` tweets '' , restricted to 140 characters . On the day of the 2016 U.S. presidential election , Twitter proved to be the largest source of breaking news , with 40 million election-related tweets sent by 10 p.m. ( Eastern Time ) that day .
Hypothesis: Twitter is a media source.
Label: ENTAILMENT