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 harder the twist given to the strands in laying, the shorter will be the resultant rope-in practice, three strands of I50fathoms lay up into a rope about 120 fathoms in length - and a rope is said to be hard-laid or soft-laid.
[EX A]: the twist

[EX Q]: Rot-proofing was discontinued in 1963, because rot-proofed cordage has deteriorated in hot and humid conditions.
[EX A]: Rot-proofing

[EX Q]: Direction of the lay and description.
[EX A]:
the lay