| http://www.w3.org/ns/prov#value | - A is an element selected from the group consisting of Ti, Ta, Nb, Hf, W, Y, Zn, Zr, Al, and mixtures of two or more thereof, B is an element selected from the group consisting of a lanthanide element, a group IIIA element, a group VA element, a group VIA element, a group IIIB element, a group IVB element, a group VB element, a group VIB element, and mixtures of two or more thereof, C is an alkali
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