In make-believe, Alison experimented with the first step of this multistep process when she melded news of the train crash in India with the toy ambulance before her.
( ( In make-believe ) ( , ( Alison ( ( ( experimented ( with ( ( the ( first step ) ) ( of ( this ( multistep process ) ) ) ) ) ) ( when ( she ( ( ( melded ( news ( of ( ( the ( train crash ) ) ( in India ) ) ) ) ) ( with ( the ( toy ambulance ) ) ) ) ( before her ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN make-believe))) (, ,) (NP (NNP Alison)) (VP (VBD experimented) (PP (IN with) (NP (NP (DT the) (JJ first) (NN step)) (PP (IN of) (NP (DT this) (NN multistep) (NN process))))) (SBAR (WHADVP (WRB when)) (S (NP (PRP she)) (VP (VBD melded) (NP (NP (NN news)) (PP (IN of) (NP (NP (DT the) (NN train) (NN crash)) (PP (IN in) (NP (NNP India)))))) (PP (IN with) (NP (DT the) (NN toy) (NN ambulance))) (PP (IN before) (NP (PRP her))))))) (. .)))
Alison couldn't understand what a train crush was.
( Alison ( ( ( could n't ) ( understand ( what ( ( a ( train crush ) ) was ) ) ) ) . ) )
(ROOT (S (NP (NNP Alison)) (VP (MD could) (RB n't) (VP (VB understand) (SBAR (WHNP (WP what)) (S (NP (DT a) (NN train) (NN crush)) (VP (VBD was)))))) (. .)))