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 Q]: The quality of the finished rope depends upon the thorough cleaning of the fibre during this stripping process.
[EX A]: the finished rope

[EX Q]: Three strands so laid up constitute a hawser-laid rope, which is the type of cordage most commonly used.
[EX A]: Three strands

[EX Q]: The crew then leave the boat and she is hoisted inboard.
[EX A]:
the boat