Assertion: soft shell clam's shell | /r/HasProperty | joined
Facets:
value: together
type: MANNER
Source sentences:
text: The outer surface of each valve shows a prominence, near the point where the two shells are joined, known as the umbo (see figure 3).
text: All clams have two bilaterally symmetrical shells that are joined together and opened by an internal or external ligament and two adductor muscles.