Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
You could have over a hundred million followers and still not a genuine person who understands you or wants to #cantshakethis #sadness
Solution: Sad
Reason: The tweet author is sad because they think no one understands them.

Now, solve this instance: I was smiling yesterday, i'm smiling today, i'll smyl tomorrow, bcoz lyf s too short to cry for anything, we nid to be strong.
Student:
Not sad