Assertion: mollusk's shell | /r/ObjectUse | used in the middle ages
Facets:
value: as a baptismal font
type: PURPOSE
Source sentences:
text: Among the largest, the giant clam of the Pacific Ocean (Tridacna gigas) has a shell that exceeds 125 cm wide, used in the Middle Ages as a baptismal font and sometimes as a gardener or fountain, which uses today.