With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Veronica Mars is part of a story.
text_B: Lucky 's Collectors Guide to 20th Century Yo-Yos is a catalog of yo-yos manufactured largely in the United States from the twentieth century .. Produced by Lucky Meisenheimer , M.D. , the Guinness World Record holder for the largest Yo-Yo collection , the book features the history of the yo-yo as well as a price guide .. Lucky Meisenheimer. Lucky Meisenheimer. Guinness World Record. Guinness World Record. Yo-Yo. Yo-Yo. Over one thousand photographs of yo-yos and memorabilia are listed in the book .. Collectors frequently use his numbering system to identify particular yo-yos .. A first edition copy of this book is included in the Smithsonian Institution collection donated by Don Duncan Jr. .. Smithsonian Institution. Smithsonian Institution. Don Duncan Jr. Don Duncan Jr
not_related.