Assertion: phosphorus | /r/HasProperty | natural
Facets:
Source sentences:
text: The phosphorus in our teeth, nails, and body fluids is natural.
text: Phosphorus is a natural element found in rocks, soils and organic material.
text: Phosphorus (fahs-for-us) is a natural mineral that is combined with oxygen to form phosphate.
text: The phosphorus in our teeth, nails, and body fluids is natural.