Same ending point, different beginning point.
(=> (Finishes ?A ?B)
(And (Exists (?C ?D)
(And (Endpoint ?B ?D)
(Endpoint ?A ?C)
(Co-Occur ?C ?D)))
(Not (Exists (?E ?F)
(And (Beginpoint ?B ?F)
(Beginpoint ?A ?E)
(Co-Occur ?E ?F))))))