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: @Uber_RSA when you click over and over again for a cupcake but there are no vehicles available... #sadness

SOLUTION: Sad

PROBLEM: @realDonaldTrump Maybe we can save them all from the desolate hell that I have no idea about

SOLUTION: Sad

PROBLEM: @Cmdr_Hadfield CNN's Wolf Blitzer calls you an American astronaut and you don't correct him? #dissapointed

SOLUTION:
Sad