| http://www.w3.org/ns/prov#value | - throws away all but the first page number specified and tests to see if a range of page numbers or a single page number was given (I found this slightly confusing at first: \ifnumerals checks if a number or range is provided, therefore the case a single page is provided is checked with \ifnumeral and if this is not the case, we check if #1 is a range of numbers or something completely different)
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