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: Commercially manufactured manila ropes over 2 inches in circumference and complying with the specification of the British Standards Institution are identified as follows: Grade I, 'Special', one black rogue's yarn in three strands; Grade II, 'Standard', one black rogue's yarn in two strands; Grade III, 'Merchant', one black rogue's yarn in one strand.

Output: Commercially manufactured manila ropes over 2 inches in circumference and complying with the specification of the British Standards Institution


Input: Consider Input: When mature the abaca plant, which grows to a height of from 10 to 30 ft, is felled and the fibre from the leaf sheaths is stripped off.

Output: the abaca plant


Input: Consider Input: Construction and characteristics of wire rope.


Output: wire rope