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: This is in relation to the direction in which the shore lies.
Example Output: the shore

Example Input: the strands are twisted up together to form the rope, and
Example Output: the strands

Example Input: Handling of vegetable fibre cordage.
Example Output:
vegetable fibre cordage