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: The rope is flexible, durable, strong, and stands up well to wear and weather.

Output: The rope

Input: Consider Input: Three or four strands are now made up into a left- or right-handed rope.

Output: Three or four strands

Input: Consider Input: CONSTRUCTION AND CHARACTERISTICS OF VEGETABLE FIBRE CORDAGE.
Output: VEGETABLE FIBRE CORDAGE