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:
Were this not done, laying the strands together would tend to untwist the yarns in each strand.

Ex Output:
this


Ex Input:
This stage is known as 'twisting the strands', and again, the twist can be left- or right-handed.

Ex Output:

This stage


