on august 21 , the polish magazine przekroj published an image for jd - mark exercise books , wearing the sign of 4fun . tv , a polish music / interactive video station . part of the advertisement contained a sample of the expression " exercise textbook " . the wording looked strange , and wikinews consulted wikipedia , the collaborative online community . upon noting the wikipedia definition , it appeared that the sentence quoted in the campaign material was identical to the initial two stanzas of the relevant dictionary entry .
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