When toddlers begin to speak, their main interest is in talking about what people do and the consequences of their behavior.
( ( When ( toddlers ( begin ( to speak ) ) ) ) ( , ( ( their ( main interest ) ) ( ( is ( in ( talking ( ( ( ( about what ) ( people do ) ) and ) ( ( the consequences ) ( of ( their behavior ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NNS toddlers)) (VP (VBP begin) (S (VP (TO to) (VP (VB speak))))))) (, ,) (NP (PRP$ their) (JJ main) (NN interest)) (VP (VBZ is) (PP (IN in) (S (VP (VBG talking) (NP (NP (SBAR (WHPP (IN about) (WHNP (WP what))) (S (NP (NNS people)) (VP (VBP do))))) (CC and) (NP (NP (DT the) (NNS consequences)) (PP (IN of) (NP (PRP$ their) (NN behavior))))))))) (. .)))
The children remember the talk about what people do.
( ( The children ) ( ( remember ( ( the talk ) ( about ( what ( people do ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS children)) (VP (VBP remember) (NP (NP (DT the) (NN talk)) (PP (IN about) (SBAR (WHNP (WP what)) (S (NP (NNS people)) (VP (VBP do))))))) (. .)))