( ( Babies ( who ( are ( first births ) ) ) ) ( ( ( face ( a ( higher ( infant ( mortality rate ) ) ) ) ) ( than ( ( ( ( higher ( order births ) ) and ) ( this risk ) ) ( is ( ( even greater ) ( for ( teenage mothers ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Babies)) (SBAR (WHNP (WP who)) (S (VP (VBP are) (NP (JJ first) (NNS births)))))) (VP (VBP face) (NP (DT a) (JJR higher) (JJ infant) (NN mortality) (NN rate)) (SBAR (IN than) (S (NP (NP (JJR higher) (NN order) (NNS births)) (CC and) (NP (DT this) (NN risk))) (VP (VBZ is) (ADJP (ADJP (RB even) (JJR greater)) (PP (IN for) (NP (JJ teenage) (NNS mothers)))))))) (. .)))
Babies who are first births face a higher infant mortality rate than higher order births and this risk is even greater for teenage mothers.
(ROOT (S (PP (IN During) (NP (NP (DT the) (JJ first) (NN year)) (PP (IN after) (NP (NN birth))))) (, ,) (NP (DT a) (NN baby)) (VP (VBD called) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN infant))) (. .)))
During the first year after birth, a baby called a(n) infant.