TASK DEFINITION: In this task you are given a tweet. You must judge whether the author of the tweet is sad or not. Label the instances as "Sad" or "Not sad" based on your judgment. You can get help from hashtags and emojis, but you should not judge only based on them, and should pay attention to tweet's text as well.
PROBLEM: @SFBART This driver is telling the passengers we did a very good job and saved a life today. That's it. #tears

SOLUTION: Not sad

PROBLEM: Israel's recent overtures towards West Africa seems to be attracting some elements of suspicion...an unnecessary suspicion though.

SOLUTION: Not sad

PROBLEM: coffee the floor; And the soul grew furious as the stillness broken by little,

SOLUTION:
Sad