( ( Prevention ( of ( ( hysterectomy due ) ( to ( ( the placenta ) ( ( ( connecting so ) ( low ( it ( covers ( ( the cervix ) ( ( preventing ( the baby ) ) ( from ( ( ( coming out ) and ) ( ( penetrating ( so deeply ) ) ( into ( the ( uterine wall ) ) ) ) ) ) ) ) ) ) ) ) ( that ( it ( ( can not ) ( be removed ) ) ) ) ) ) ) ) ) ) ( ( called ( placenta ( previa accreta ) ) ) . ) )
(ROOT (S (NP (NP (NNP Prevention)) (PP (IN of) (ADJP (ADJP (RB hysterectomy) (JJ due)) (PP (TO to) (NP (NP (DT the) (NN placenta)) (VP (VBG connecting) (ADVP (RB so)) (S (ADJP (JJ low)) (SBAR (S (NP (PRP it)) (VP (VBZ covers) (NP (NP (DT the) (NN cervix)) (VP (VBG preventing) (NP (DT the) (NN baby)) (PP (IN from) (S (VP (VP (VBG coming) (PRT (RP out))) (CC and) (VP (VBG penetrating) (ADVP (RB so) (RB deeply)) (PP (IN into) (NP (DT the) (JJ uterine) (NN wall))))))))))))) (SBAR (IN that) (S (NP (PRP it)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN removed)))))))))))) (VP (VBD called) (NP (JJ placenta) (NN previa) (NN accreta))) (. .)))
Prevention of hysterectomy due to the placenta connecting so low it covers the cervix preventing the baby from coming out and penetrating so deeply into the uterine wall that it cannot be removed called placenta previa accreta.
(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))))))) (. .)))