Assertion: red phosphorus | /r/HasProperty | prepared
Facets:
value: commercially
type: MANNER
Source sentences:
text: Red phosphorus is prepared commercially by heating calcium phosphate with sand and coke in an electric furnace.
text: Red phosphorus is prepared commercially by heating calcium phosphate with sand and coke in an electric furnace.
text: Red phosphorus is prepared commercially by heating calcium phosphate with sand and coke in an electric furnace.