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.

Example Input: The quality varies greatly with the soil in which it is grown, and for purposes of Admiralty specification it is graded for quality in the order Italian, European, New Zealand and St.
Example Output: it

Example Input: Hemp is very much softer than the other fibres described above.
Example Output: Hemp

Example Input: Indian Hemp is not reliable for cordage.
Example Output:
Indian Hemp

