| http://www.w3.org/ns/prov#value | - e articles such as pillowcases or the like from generally rectangular blanks of textile material which have been folded along a fold line extendingtransversely along the medial portion of the blank with the opposite side edges and the end edges in substantially overlying alignment with one another, and for detecting an out of alignment condition of the leading end edges of a corner of the foldedbl
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