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.
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Question: The direction of the lay can also be seen at a glance when the rope is viewed from above, as illustrated in fig. 6-5 (i).

Answer: The direction of the lay


Question: A rogue's yarn is also used in commercially manufactured rope to indicate the type of fibre, its quality, and perhaps the particular manufacturer.

Answer: A rogue's yarn


Question: Though it is not necessary to go deeply into the process of ropemaking, an elementary knowledge of its principles is desirable.

Answer:
the process of ropemaking