Assertion: muscle fiber's muscle | /r/HasProperty | unusual formation
Facets:
value: in man
type: LOCATION
Source sentences:
text: They include the muscles of the back, which keep the trunk erect, and the abdominal muscles, which constitute an unusual formation in man, the prelum abdominale.
text: They include the muscles of the back, which keep the trunk erect, and the abdominal muscles, which constitute an unusual formation in man, the prelum abdominale.