kind_von(karl_VI, leopold_I).
kind_von(maria_theresia, karl_VI).
kind_von(joseph_II, maria_theresia).
kind_von(joseph_II, franz_I).
kind_von(leopold_II, maria_theresia).
kind-von(marie_antoinette, maria_theresia).
! Bitte _ statt - verwenden! \Hinweis{Bindestrich}
----- n599 ------------------------
Many nasty little errors are difficult to locate for the beginner.
Since it isn't worth the student's time to locate them precise error
messages are given. This error is common for LISP programmers. GUPU
imposes many more restrictions on the Prolog language.
Read hint (Hinweis).
Correct clause.
[logprog|GUPU|UWN]