Assertion: pearl oyster | /r/CapableOf | produce pearl
Facets:
value: in nature
type: LOCATION
value: around small grain of sand
type: OTHER
value: by covering a minute invasive object
type: MANNER
value: around some other irritant
type: OTHER
Source sentences:
text: Pearl oysters produce pearl around small grain of sand or some other irritant trapped in the shell.
text: Pearl oysters produce pearl around small grain of sand or some other irritant trapped in the shell.
text: Despite there being numerous different species of oyster, oysters are generally split up into four distinct groups, which are true oysters (the ones eaten by humans), pearl oysters (produce pearls), thorny oysters (also known as spiny oysters) and saddle oysters (have very thin shells).
text: In nature, pearl oysters produce pearls by covering a minute invasive object with nacre.
text: In nature, pearl oysters produce pearls by covering a minute invasive object with nacre.