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.

I click on download on my PC. Message says 'Thank you for downloading #iTunes \nSo, where's the download?! #frustrated 
Not sad

Does she really need to pout all the time - getting on my nerves #GBBO
Sad

Regret for the things we did can be tempered by time; it is regret for the things we did not do that is inconsolable. - Sydney J. Harris

Not sad