Olivia was sold the cake on the sheet by Liam .
* cake ( x _ 4 ) ; * sheet ( x _ 7 ) ; sell . recipient ( x _ 2 , Olivia ) AND sell . theme ( x _ 2 , x _ 4 ) AND sell . agent ( x _ 2 , Liam ) AND cake . nmod . on ( x _ 4 , x _ 7 )