( Pigs ( ( ( give birth ) ( to ( large litters ) ) ) . ) )
(ROOT (S (NP (NNS Pigs)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (JJ large) (NNS litters)))) (. .)))
Pigs give birth to large litters.
(ROOT (S (NP (JJ Placental) (NNS mammals)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (ADJP (RB relatively) (JJ large)) (NNS fetuses)))) (. .)))