A horse proved that the box was rolled by Liam .
* box ( x _ 5 ) ; horse ( x _ 1 ) AND prove . agent ( x _ 2 , x _ 1 ) AND prove . ccomp ( x _ 2 , x _ 7 ) AND roll . theme ( x _ 7 , x _ 5 ) AND roll . agent ( x _ 7 , Liam )