TASK DEFINITION: In this task, you are given a news headline in English. You are expected to classify the post into two classes: sarcastic or non-sarcastic. A sarcastic sentence is one that refers to the use of words that mean the opposite of what you really want to say, especially in order to insult someone, or to show irritation, or just to be funny.
PROBLEM: after decades of effort, chemists overseas report 'nano' breakthrough

SOLUTION: non-sarcastic

PROBLEM: al franken will leave senate in early january

SOLUTION: non-sarcastic

PROBLEM: homosexual dolphin has highly developed sense of gay-nar

SOLUTION:
sarcastic