Or they try to get another person to do something'to hand them an object or help them perform a task'by reaching, pointing, and making sounds at the same time.
( Or ( they ( ( try ( to ( ( ( get ( another ( person ( to ( ( ( do something ) ` ) ( to ( ( ( ( hand them ) ( an object ) ) or ) ( help ( them ( perform ( a task ) ) ) ) ) ) ) ) ) ) ) ` ) ( by ( ( ( ( ( reaching , ) pointing ) , ) and ) ( ( making sounds ) ( at ( the ( same time ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (CC Or) (NP (PRP they)) (VP (VBP try) (S (VP (TO to) (VP (VB get) (NP (DT another) (NN person) (S (VP (TO to) (VP (VB do) (NP (NN something)) (`` `) (S (VP (TO to) (VP (VP (VB hand) (NP (PRP them)) (NP (DT an) (NN object))) (CC or) (VP (VB help) (S (NP (PRP them)) (VP (VB perform) (NP (DT a) (NN task)))))))))))) (`` `) (PP (IN by) (S (VP (VP (VBG reaching)) (, ,) (VP (VBG pointing)) (, ,) (CC and) (VP (VBG making) (NP (NNS sounds)) (PP (IN at) (NP (DT the) (JJ same) (NN time))))))))))) (. .)))
Simultaneously pointing and making sounds have been shown to cause the fastest reaction in adults.
( ( Simultaneously ( ( ( pointing and ) making ) sounds ) ) ( ( have ( been ( shown ( to ( cause ( ( the ( fastest reaction ) ) ( in adults ) ) ) ) ) ) ) . ) )
(ROOT (S (S (VP (ADVP (RB Simultaneously)) (VBG pointing) (CC and) (VBG making) (NP (NNS sounds)))) (VP (VBP have) (VP (VBN been) (VP (VBN shown) (S (VP (TO to) (VP (VB cause) (NP (NP (DT the) (JJS fastest) (NN reaction)) (PP (IN in) (NP (NNS adults)))))))))) (. .)))