"of which comprises" is a correct and usable part of a sentence in written English.
It is used to refer to something that is part of a larger group, typically used when referring to things such as people, items, or ideas. Example: The company employs five staff members, of which comprises three marketing executives, one accountant, and a customer service representative.
We arrive at the score by rating three key factors, each of which comprises numerous subfactors.
Each grating module holds three circular grating facets, each of which comprises approximately 80 of the triangular grating elements seen in Figure 9.4.
The roots of woody dicots and conifers develop only a cortex (the pith is absent), the innermost layer of which comprises thick-walled wall cells called endodermal cells.
Cloud Station 13 is described as a place set up to protect the vast amounts of information humanity now hoards on its devices – the majority of which comprises selfies, pictures of kittens and a lot of porn.
A proportion of the loans to Indonesia have recently been settled, though the country still owes £400m, most of which comprises debts for the purchase of British weapons, according to official figures.
The emitter integrates a main coil and two groups of secondary windings, each of which comprises two series-wound coils with inverse enwinding directions.
Tony Blair did likewise with the Tanzania radar contract, a third of which comprised bribes.
Both Perm and Mordovia host several prison camps, some of which comprised the Soviet-era gulag system.
The result runs to 500,000 peripatetic words across 2,000 pages, the first 700 of which comprise the first volume.
At bottom, there were just two opposing positions in the debate, each of which comprised a two-point stance.
A typical day-5 human embryo consists of 200 250 cells, most of which comprise the trophoblast, which is the outermost layer of the blastocyst.
