( They ( ( said ( they ( ( found ( evidence ( of nicotine ) ) ) ( in ( ( the urine ) ( of ( ( ( newborn babies ) , ) ( which ( they ( said ( proves ( that ( ( tobacco products ) ( ( cross ( the placenta ) ) ( into ( ( a baby ) ( in ( the womb ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD said) (SBAR (S (NP (PRP they)) (VP (VBD found) (NP (NP (NN evidence)) (PP (IN of) (NP (NN nicotine)))) (PP (IN in) (NP (NP (DT the) (NN urine)) (PP (IN of) (NP (NP (JJ newborn) (NNS babies)) (, ,) (SBAR (WHNP (WDT which)) (S (NP (PRP they)) (VP (VBD said) (SBAR (S (VP (VBZ proves) (SBAR (IN that) (S (NP (NN tobacco) (NNS products)) (VP (VBP cross) (NP (DT the) (NN placenta)) (PP (IN into) (NP (NP (DT a) (NN baby)) (PP (IN in) (NP (DT the) (NN womb)))))))))))))))))))))) (. .)))
They said they found evidence of nicotine in the urine of newborn babies, which they said proves that tobacco products cross the placenta into a baby in the womb.
(ROOT (S (NP (NP (DT A) (NN connection)) (PP (TO to) (NP (DT the) (NN placenta)))) (VP (VBZ is) (VP (VBN required) (PP (IN for) (NP (DT a) (JJ newborn) (NN baby))) (S (VP (TO to) (VP (VB begin) (NP (NN breathing))))))) (. .)))