| http://www.w3.org/ns/prov#value | - p. [0208] Suitable examples of the aryl moiety of an arylsulfonic acid anion include aryl groups containing 6 to 14 carbon atoms, such as a phenyl group, a tolyl group and a naphthyl group. [0209] The alkyl moiety of the alkylsulfonic acid anion and the aryl moiety of the arylsulfonic acid anion may have substituents. [0210] Examples of such substituents include halogen atoms, alkyl groups, alkoxy
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