| http://www.w3.org/ns/prov#value | - D is a linking arm chosen from linear and branched alkyl chains, preferably containing from 1 to 14 carbon atoms, which may be interrupted by one or more heteroatoms such as oxygen, sulphur or nitrogen, and which may be substituted with at least one radical chosen from hydroxyl and C1-C6 alkoxy, and which may carry at least one ketone function;
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