They touch an object, hold it up, or point to it while looking at another person to make sure he or she notices.
( They ( ( ( ( ( ( ( touch ( an object ) ) , ) ( ( hold it ) up ) ) , ) or ) ( ( point ( to it ) ) ( while ( ( looking ( at ( another ( person ( to ( make sure ) ) ) ) ) ) ( ( he or ) ( she notices ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VP (VB touch) (NP (DT an) (NN object))) (, ,) (VP (VB hold) (NP (PRP it)) (PRT (RP up))) (, ,) (CC or) (VP (VB point) (PP (TO to) (NP (PRP it))) (SBAR (IN while) (S (VP (VBG looking) (PP (IN at) (NP (DT another) (NN person) (S (VP (TO to) (VP (VB make) (ADJP (JJ sure)))))))) (NP (NP (PRP he)) (CC or) (NP (PRP she) (NNS notices))))))) (. .)))
The only way they can ensure another person notices them is by touching, holding up or pointing at an object while looking at another person.
( ( ( The ( only way ) ) ( they ( can ( ensure ( another person ) ) ) ) ) ( ( notices ( them ( is ( by ( ( ( ( touching , ) ( holding up ) ) or ) ( pointing ( at ( ( an ( object while ) ) ( looking ( at ( another person ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ only) (NN way)) (SBAR (S (NP (PRP they)) (VP (MD can) (VP (VB ensure) (NP (DT another) (NN person))))))) (VP (VBD notices) (SBAR (S (NP (PRP them)) (VP (VBZ is) (PP (IN by) (S (VP (VP (VBG touching)) (, ,) (VP (VBG holding) (PRT (RP up))) (CC or) (VP (VBG pointing) (PP (IN at) (NP (NP (DT an) (NN object) (NN while)) (VP (VBG looking) (PP (IN at) (NP (DT another) (NN person)))))))))))))) (. .)))