Assertion: muscle fiber's muscle | /r/HasProperty | about 40 percent of the body
Facets:
Source sentences:
text: Skeletal muscles in man, which differ from one another in shape, size, and position, constitute about 40 percent of the body mass.
text: Skeletal muscles in man, which differ from one another in shape, size, and position, constitute about 40 percent of the body mass.