(=> (Equal-But-Time ?A ?B)
(Or (Not (Exists (?C ?D)
(And (Time-Value ?B ?D)
(Time-Value ?A ?C)
(= ?C ?D))))
(Not (Exists (?E ?F)
(And (Duration-Value ?B ?F)
(Duration-Value ?A ?E)
(= ?E ?F))))))