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: @BrettKeeble I guess it never. @smartassunit #worry

SOLUTION: Not sad

PROBLEM: @kagehime3 I'm so starved for content I'd take it but I'd def pout about it (՟ິͫઘ ՟ິͫ)

SOLUTION: Sad

PROBLEM: Marcos rojo plays for man united !!  Just let that sink in !!!

SOLUTION:
Not sad