| http://www.w3.org/ns/prov#value | - Preferably, the sheet or tubular structure is provided in long sizes, which may have a length between 1 m and 500 m or more, in particular 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 20, 25, 50, 100, 150, 200, 250, 300, 350, 400, 450 or 500 m, or are within a range defined by any two of these values.
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