Consider, for example, a 9-month-old infant who has never before seen a jack-in-the-box.
( ( ( ( ( Consider , ) ( for example ) ) , ) ( ( a ( 9-month-old infant ) ) ( who ( ( has never ) ( before ( seen ( a jack-in-the-box ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Consider) (, ,) (PP (IN for) (NP (NN example))) (, ,) (NP (NP (DT a) (JJ 9-month-old) (NN infant)) (SBAR (WHNP (WP who)) (S (VP (VBZ has) (ADVP (RB never)) (VP (ADVP (RB before)) (VBN seen) (NP (DT a) (JJ jack-in-the-box)))))))) (. .)))
For instance, think of a 9-month-old infant experiencing a jack-in-the-box for the first time.
( ( For instance ) ( , ( ( think ( of ( ( a ( 9-month-old infant ) ) ( ( experiencing ( a jack-in-the-box ) ) ( for ( the ( first time ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN For) (NP (NN instance))) (, ,) (VP (VB think) (PP (IN of) (NP (NP (DT a) (JJ 9-month-old) (NN infant)) (VP (VBG experiencing) (NP (DT a) (JJ jack-in-the-box)) (PP (IN for) (NP (DT the) (JJ first) (NN time))))))) (. .)))