| http://www.w3.org/ns/prov#value | - another embodiment, in which case each R*is defined as for R.sup.1 R.sup.13; each X is as described above in (I); n is an integer from 0 to 4, and from 1 to 3 in another embodiment, and 1 or 2 in yet another embodiment; and R.sup.1 through R.sup.13 (and R.sup.4' through R.sup.7' and R.sup.10'through R.sup.13') are independently: selected from the group consisting of hydrogen radical, halogen radi
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