At first, the adult tries to capture the child's attention by working the toy and, as the clown emerges, exclaiming,  Pop!
( ( At first ) ( , ( ( ( ( ( ( ( ( ( ( the adult ) ( tries ( to ( ( capture ( ( the ( child 's ) ) attention ) ) ( by ( working ( the toy ) ) ) ) ) ) ) and ) , ) ( as ( ( the clown ) emerges ) ) ) , ) exclaiming ) , ) Pop ) ! ) ) )
(ROOT (S (PP (IN At) (NP (JJ first))) (, ,) (S (NP (DT the) (NN adult)) (VP (VBZ tries) (S (VP (TO to) (VP (VB capture) (NP (NP (DT the) (NN child) (POS 's)) (NN attention)) (PP (IN by) (S (VP (VBG working) (NP (DT the) (NN toy)))))))))) (CC and) (, ,) (PRN (SBAR (IN as) (S (NP (DT the) (NN clown)) (VP (VBZ emerges))))) (, ,) (S (ADJP (JJ exclaiming))) (, ,) (S (ADJP (JJ Pop))) (. !)))
The adult goes "pop" after the clown emerges from the toy.
( ( The adult ) ( ( goes ( `` ( ( pop '' ) ( after ( ( the clown ) ( emerges ( from ( the toy ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN adult)) (VP (VBZ goes) (ADJP (`` ``) (JJ pop) ('' '') (SBAR (IN after) (S (NP (DT the) (NN clown)) (VP (VBZ emerges) (PP (IN from) (NP (DT the) (NN toy)))))))) (. .)))