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: This process is called 'laying' and is always carried out in the opposite direction to that used in the previous stage of twisting the strands; it is, moreover, distinct from the simple spin or twist and is twofold, in that:

Output: This process


Input: Consider Input: The number and size of the yarns required to make each strand depends on the size of the rope it is intended to make.

Output: the yarns


Input: Consider Input: Three hawser-laid ropes each of 120 fathoms, laid up together in the opposite direction to that of their own lay, will form a cable-laid rope, 100 fathoms in length.


Output: Three hawser-laid ropes