| http://www.w3.org/ns/prov#value | - The solvent employed can be, for example, an alcohol such as methanol, ethanol, propanol or isopropanol; an ether such as diethyl ether, diisopropyl ether, tetrahydrofuran or dioxane; an aprotic polar solvent such as dimethylformamide, dimethylacetamide or dimethyl sulfoxide; a nitrile such as acetonitrile; an ester such as methyl acetate or ethyl acetate; an aromatic hydrocarbon such as benzene,
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