| http://www.w3.org/ns/prov#value | - For example, amorphous silicon, silicon oxide or silicate compound, nitride ceramics such as silicon nitride, aluminum nitride and titan nitride, organic polymer material (inter-atomic bonding is broken by irradiation of light), a metal such as Al, Li, Ti, Mn, In, Sn, Y, La, Ce, Nd, Pr, Gd and Sm, and an alloy including at least one kind of these metals may be mentioned.
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