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.

Ex Input:
Left-handed ropes, in which each component is made in exactly the opposite direction, are found in commercial practice; but the only left-handed cordage supplied to the Royal Navy - and that in very small quantities - is hammock Iashing and marline.

Ex Output:
Left-handed ropes


Ex Input:
Rope which is continually subjected to heat and damp - when in the tropics, for example - will lose its elasticity and strength sooner than rope used under normal conditions of temperature and humidity.

Ex Output:
Rope


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

Ex Output:

The rope