Knowledge Systems Laboratory, Stanford
University
12
Using the Interval Relations
u“The reign of George VI preceded that of Elizabeth II.”
„(Precedes
(ReignOf GeorgeVI) (ReignOf ElizabethII))
u“The reign of Elvis overlapped with the 1950’s.”
„(Starting-Point
Fifties (Starting-Point AD1950))
„(Ending-Point
Fifties (Ending-Point AD1959))
„(Overlaps
Fifties (ReignOf Elvis))