Liam valued that the cake was sketched by a boy .
* cake ( x _ 4 ) ; value . agent ( x _ 1 , Liam ) AND value . ccomp ( x _ 1 , x _ 6 ) AND sketch . theme ( x _ 6 , x _ 4 ) AND sketch . agent ( x _ 6 , x _ 9 ) AND boy ( x _ 9 )