| http://www.w3.org/ns/prov#value | - on-substituted or substituted aryl group, having preferably six to 12 carbons, such as a phenyl group, a toluic group, a xylyl group, a naphthalene group, and a benzyl group; a hydroxy alkyl group having one to six carbons, such as a hydroxy methyl group, a 2-hydroxy ethyl group, a 2-hydroxy propyl group, a 3-hydroxy propyl group, a 4-hydroxy butyl group, and a 6-hydroxy hexyl group; and a heteroc
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