Assertion: worm's muscle | /r/HasProperty | four distinct strips
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Below this are two layers of muscles, which develop from the lining of the coelom (body cavity): circular muscles make a segment longer and slimmer when they contract, while under them are longitudinal muscles, usually four distinct strips, whose contractions make the segment shorter and fatter.