claim: Children get cavities from Trick-or-Treating.
evidence: The Walker Cup is a golf trophy contested in odd-numbered years by leading amateur golfers in two teams  : United States , and Great Britain and Ireland .. golf. golf. amateur. amateur sports. United States. United States. Great Britain. Great Britain. Ireland. Ireland. The official name is the Walker Cup Match -LRB- not `` Matches '' as in Ryder Cup Matches -RRB- .. Ryder Cup Matches. Ryder Cup. Ryder Cup. Ryder Cup. It is organised by The R&A and the United States Golf Association -LRB- USGA -RRB- .. United States. United States. R&A. R&A. United States Golf Association. United States Golf Association. In 1921 the Royal Liverpool Golf Club hosted an unofficial contest which was followed by official annual contests from 1922 through 1924 .. 1922 Walker Cup. Royal Liverpool Golf Club. Royal Liverpool Golf Club, Hoylake. From 1925 they became biennial , held on even-number years .. After World War Two they switched to odd-numbered years .. They are held alternately in the U.S. , and Ireland or Britain .. Ireland. Ireland. The cup is named in honor of George Herbert Walker who was president of the USGA in 1920 when the match was initiated .. George Herbert Walker. George Herbert Walker. Walker is the grandfather and namesake of George H. W. Bush and great-grandfather of George W. Bush , the 41st and 43rd Presidents of the United States , respectively .. United States. United States. George H. W. Bush. George H. W. Bush. George W. Bush. George W. Bush. Unlike the Ryder Cup , which similarly began as a competition between the U.S. and the United Kingdom , the Walker Cup has never been expanded to include all European amateur golfers who would otherwise be eligible .. amateur. amateur sports. Ryder Cup. Ryder Cup. As of 2015 , the U.S. led the Walker Cup series 35 to 9 , with one halved match -LRB- draw -RRB- , but the two teams have been more evenly matched since 1989 when the Great Britain and Ireland team ended the U.S. team 's eight-match winning run .. Great Britain. Great Britain. Ireland. Ireland. From 1989 through 2015 , the team have 7 wins each .. Also , the 1989 match and the three matches from 2003 to 2007 were all decided by a single point .