( ( Placental mammals ) ( ( ( give birth ) ( to ( a ( ( relatively ( ( large and ) mature ) ) fetus ) ) ) ) . ) )
(ROOT (S (NP (JJ Placental) (NNS mammals)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (DT a) (ADJP (RB relatively) (JJ large) (CC and) (JJ mature)) (NN fetus)))) (. .)))
Placental mammals give birth to a relatively large and mature fetus.
(ROOT (S (NP (JJ Placental) (NNS mammals)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (ADJP (RB relatively) (JJ large)) (NNS fetuses)))) (. .)))