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.

That new Kask aero helmet is grim. Especially in yellow. Looks like a safety hard hat ... #TDF #healthandsafety
Not sad

@flybe Doesn't explain the ability to land at Manchester but not Bradford - other than more convenient for Flybe. Many unhappy travelers
Sad

'I hear that.. Your sadness. But human can be stronger with defeat their sadness!'

Not sad