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: @StreamPlanetHD #crap sorry but doesn’t work

SOLUTION: Sad

PROBLEM: Texans and Astros both shut out tonight. Houston, we're back to normal. #texans #Astros #sadness #losers

SOLUTION: Sad

PROBLEM: the man was staring at him intensely, not smiling but not frowning either. just looking at him. 'you should sleep some more' the man says

SOLUTION:
Sad