| http://www.w3.org/ns/prov#value | - rogenation method described in [1] or [2] above, wherein a catalyst is used in the hydrogenation reaction, and the catalyst contains at least one type or two or more types of elements selected from the group consisting of palladium (Pd) , platinum (Pt), ruthenium (Ru) and rhodium (Rh). [4] The hydrogenation method described in [3] above, wherein the catalyst supplied to the hydrogenation reaction
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