entertained by the sight of someone 
(ROOT (S (VP (VBN entertained) (PP (IN by) (NP (NP (DT the) (NN sight)) (PP (IN of) (NP (NN someone))))))))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))))))))