Complex sentence: An example of a raw material is cotton, which is harvested from plants, and can then be processed into thread (also considered a raw material), which can then be woven into cloth, a semi-finished material.
Split into simpler sentences: An example of a raw material is cotton, which is harvested from plants. Cotton can be processed into thread (also considered a raw material), which can then be woven into cloth, a semi-finished material.