Assertion: coral's polyp | /r/CapableOf | use calcium carbonate
Facets:
value: from seawater
type: LOCATION
Source sentences:
text: The polyp uses calcium carbonate (limestone) from seawater to build a hard, cup-shaped skeleton.
text: The polyp uses calcium carbonate (limestone) from seawater to build a hard, cup-shaped skeleton.
text: The polyp uses calcium carbonate (limestone) from seawater to build a hard, cup-shaped skeleton.