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 rope is made from the leaves of the Agave sisalana plant, which is a member of the cactus family.

Output: This rope


Input: Consider Input: When new and untreated it is deep golden-brown in colour.

Output: it


Input: Consider Input: The direction of the lay can also be seen at a glance when the rope is viewed from above, as illustrated in fig. 6-5 (i).


Output: The direction of the lay