| http://www.w3.org/ns/prov#value | - HTaWO.sub.6, HNbO.sub.3, HTiNbO.sub.5, HTiTaO.sub.5, HSbTeO.sub.6, H.sub.5Ti.sub.4O.sub.9, HSbO.sub.3, H.sub.2MoO.sub.4 Selenites and arsenides such as(NH.sub.4).sub.3H(SeO.sub.4).sub.2, UO.sub.2AsO.sub.4, (NH.sub.4).sub.3H(SeO.sub.4).sub.2, KH.sub.2AsO.sub.4, Cs.sub.3H(SeO.sub.4).sub.2, Rb.sub.3H(SeO.sub.4).sub.2, Oxides such as Al.sub.2O.sub.3, Sb.sub.2O.sub.5, ThO.sub.2, SnO.sub.2, ZrO.sub.2,M
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