A boy expected that a balloon was dusted by a girl .
boy ( x _ 1 ) AND expect . agent ( x _ 2 , x _ 1 ) AND expect . ccomp ( x _ 2 , x _ 7 ) AND balloon ( x _ 5 ) AND dust . theme ( x _ 7 , x _ 5 ) AND dust . agent ( x _ 7 , x _ 10 ) AND girl ( x _ 10 )