Assertion: beryllium's compound | /r/HasProperty | bertrandite
Facets:
Source sentences:
text: The most important commercial sources of beryllium and its compounds are beryl and bertrandite.
text: The most important commercial sources of beryllium and its compounds are beryl and bertrandite.
text: The most important commercial sources of beryllium and its compounds are beryl and bertrandite.
text: The most important commercial sources of Beryllium and its compounds are beryl and bertrandite.