The San Diego Surf of the American Basketball Association is located in the city. The annual Farmers Insurance Open golf tournament (formerly the Buick Invitational) on the PGA Tour occurs at Torrey Pines Golf Course. This course was also the site of the 2008 U.S. Open Golf Championship. The San Diego Yacht Club hosted the America's Cup yacht races three times during the period 1988 to 1995. The amateur beach sport Over-the-line was invented in San Diego, and the annual world Over-the-line championships are held at Mission Bay every year.

Answer this question, if possible (if impossible, reply "unanswerable"): How many times were the America's Cup yacht races hosted by the San Diego Yacht Club from 1988 to 1945?
unanswerable