| http://www.w3.org/ns/prov#value | - wherein R and R1 may be the same or different, and each may be selected from the group consisting of H; any straight- or branched-chain alkyl constituent having from about 1 carbon atom to about 8 carbon atoms, such as CH3, CH2CH3, CH2CH2CH3, CH(CH3)2, C(CH3)3 and the like; acetyl; vinyl; allyl; ???(CH2)n???OH, wherein n may be an integer in the range of 0 to about 20;
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