Assertion: metal's use | /r/HasProperty | practical
Facets:
Source sentences:
text: The demand for precious metals is driven not only by their practical use, but also by their role as investments and a store of value.
text: However, these metals found little practical use until the introduction of crucible steel around 300 BC.
text: The demand for precious metals is driven not only by their practical use, but also by their role as investments and a store of value.