IQ boosting was achieved through a fetal replacement process where the embryos from two carefully selected mothers were to be switched from one to another.
( ( IQ boosting ) ( ( was ( achieved ( through ( ( a ( fetal ( replacement process ) ) ) ( where ( ( ( the embryos ) ( from two ) ) ( carefully ( selected ( mothers ( were ( to ( be ( ( switched ( from one ) ) ( to another ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP IQ) (NNP boosting)) (VP (VBD was) (VP (VBN achieved) (PP (IN through) (NP (NP (DT a) (JJ fetal) (NN replacement) (NN process)) (SBAR (WHADVP (WRB where)) (S (NP (NP (DT the) (NNS embryos)) (PP (IN from) (NP (CD two)))) (ADVP (RB carefully)) (VP (VBD selected) (SBAR (S (NP (NNS mothers)) (VP (VBD were) (S (VP (TO to) (VP (VB be) (VP (VBN switched) (PP (IN from) (NP (CD one))) (PP (TO to) (NP (DT another))))))))))))))))) (. .)))
IQ boosting cannot be done through fetal replacement.
( ( IQ boosting ) ( ( ( can not ) ( be ( done ( through ( fetal replacement ) ) ) ) ) . ) )
(ROOT (S (NP (NNP IQ) (NNP boosting)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN done) (PP (IN through) (NP (JJ fetal) (NN replacement)))))) (. .)))