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.

[Q]: This is made from sisal laid up left-handed because when used for lashing up with a marline hitch it is less likely to unlay than a right- handed rope.
[A]: This


[Q]: It is marked with a red rogue's yarn in each strand.
[A]: It


[Q]: It is obviously important to keep her bilges clear of rocks or large stones.
[A]:
her bilges