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.

Example Input: New sisal rope is as strong as a second-grade manila, but it is less flexible, durable and resistant to wear and weather.
Example Output: New sisal rope

Example Input: St. Helena and India.
Example Output: St. Helena and India.

Example 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.
Example Output:
Rope