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 new and untreated it is deep golden-brown in colour.

Output: it


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

Output: The rope


Input: Consider Input: The quality of the finished rope depends upon the thorough cleaning of the fibre during this stripping process.


Output: the finished rope