Assertion: group metal | /r/HasProperty | clustered in periodic table
Facets:
value: together
type: MANNER
Source sentences:
text: The platinum-group metals (abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs)) are six noble, precious metallic elements clustered together in the periodic table.