| http://www.w3.org/ns/prov#value | - The tetra-valent aromatic hydrocarbon group having 6 to 14 carbon atoms, shown by A1 includes a monocyclic or a polycyclic group obtained by condensation of 2 to 3 rings, which is specifically exemplified by, for example, a group shown by the formula [9], a group shown by the formula [17], and a group shown by the formula [18], and among others, a preferable one is a group shown by the above-descr
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