| http://www.w3.org/ns/prov#value | - The term ???alkynyl??? refers to a straight chain, branched, mono- or poly-cyclic unsaturated hydrocarbon chain, preferably having from 2 to 10 carbon atoms, most preferably 2 to 6 carbon atoms such as ethynyl, 1-propynyl, 1- and 2-butynyl, 2-methyl-2-propynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl,2-hexynyl,3-hexynyl,4-hexynyl,5-hexynyl,10-undecynyl,4-ethyl-l-octyn-3-yl, 7-dodecynyl, 9-dodecynyl, 10
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