| http://www.w3.org/ns/prov#value | - and an amphoteric metal, alcoholates of one or more of such metals as sodium, potassium, lithium, calcium, titanium, tin, magnesium, aluminum, zinc, and the like, alkaline reacting salts such as borates and carbonates of the alkali metals, free metals such as sodium, potassium, lithium, calcium, cobalt, tin, germanium, cerium, magnesium, lead, antimony' and the like as well as salts of these and
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