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: All three should be spread about one-third of the boat's length apart.

Output: All three


Input: Consider Input: Construction and characteristics of man-made fibre cordage.


Output: man-made fibre cordage