The good news is that the teen-age birth rate has fallen almost 9 percent since 1991.
( ( The ( good news ) ) ( ( is ( that ( ( the ( teen-age ( birth rate ) ) ) ( has ( ( fallen ( almost ( 9 percent ) ) ) ( since 1991 ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ good) (NN news)) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (JJ teen-age) (NN birth) (NN rate)) (VP (VBZ has) (VP (VBN fallen) (NP (RB almost) (CD 9) (NN percent)) (PP (IN since) (NP (CD 1991)))))))) (. .)))
In 1991, school began focusing more on teaching safe sex practices.
( ( In 1991 ) ( , ( school ( ( began ( ( focusing more ) ( on ( teaching ( safe ( sex practices ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (CD 1991))) (, ,) (NP (NN school)) (VP (VBD began) (S (VP (VBG focusing) (NP (JJR more)) (PP (IN on) (S (VP (VBG teaching) (NP (JJ safe) (NN sex) (NNS practices)))))))) (. .)))