In this task, you are given a sentence. You must find the primary subject in the supplied sentence. The output must be a sub-sequence in the sentence.

Ex Input:
It is grown in Kenya, Tanganyika, Haiti and Java and, when new and untreated, is hairy and of a pale straw colour.

Ex Output:
It


Ex Input:
MATERIALS USED.

Ex Output:
MATERIALS USED


Ex Input:
Hemp is heavier than manila and the best quality is stronger than the manila supplied to the Royal Navy.

Ex Output:

Hemp


