Assertion: harmonica's comb | /r/MadeOf | plastic
Facets:
Source sentences:
text: Kratt Company, which, founded by German-American William Jacob "Bill" Kratt Sr., originally made pitch pipes and later, in 1952, secured a patent for combs made of plastic.
text: No matter what kind of harmonica, they are always made up of five basic parts: a comb (also known as body), which is made of plastic, wood or metal, and contains the air channel, as well as supporting the reed plates (or sandwich the comb), which have the reeds blots on to it.