Input: what is the meaning of black belt in taekwondo?

Output: The senior section of ranks

Input: who plays meredith's sister on grey's anatomy?

Output: Chyler Leigh

Input: who plays the unic in game of thrones?

Output: Conleth Seamus Eoin Croiston Hill

Input: why do leaflets of mimosa fold when touched?

Output:
defending themselves from harm