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.

Input: Consider Input: When made of manila or sisal, the fibres of the rope are treated with a rot-proofing solution during the first stage of rope-making, when the fibres are being combed into ribbons.

Output: the fibres of the rope


Input: Consider Input: It is marked with a red rogue's yarn in each strand.

Output: It


Input: Consider Input: A coir rope is the weakest of all cordage, but it has the advantage of being so light that it floats on water.


Output: A coir rope