| http://www.w3.org/ns/prov#value | - f the flexible tubular member; a backup member nipping the flexible tubular member in cooperation with the nip member; a stay disposed at the internal space to support the nip member; and a cover disposed at the internal space and covering the stay, one of the stay and the cover being provided with a hook portion, and remaining one of the stay and the cover being provided with an engaged portion e
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