A president declared that the cat helped the boy beside the piano .
* cat ( x _ 5 ) ; * boy ( x _ 8 ) ; * piano ( x _ 11 ) ; president ( x _ 1 ) AND declare . agent ( x _ 2 , x _ 1 ) AND declare . ccomp ( x _ 2 , x _ 6 ) AND help . agent ( x _ 6 , x _ 5 ) AND help . theme ( x _ 6 , x _ 8 ) AND boy . nmod . beside ( x _ 8 , x _ 11 )