( And ( ( ( ( ( ( Mortenson , ) 43 ) , ) ( who ( ( ( went off ) ( in 1992 ) ) ( to ( climb ( ( ( 28,250-foot K2 ) , ) ( ( the ( world 's ) ) ( second-highest peak ) ) ) ) ) ) ) ) , ) ( ( ( came back ) ( ( ( committed ( to ( ( bettering lives ) ( of ( the Balti ) ) ) ) ) people ) ( who ( ( served ( as porters ) ) ( on ( his climb ) ) ) ) ) ) . ) ) )
(ROOT (S (CC And) (NP (NP (NNP Mortenson)) (, ,) (NP (CD 43)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBD went) (PRT (RP off)) (PP (IN in) (NP (CD 1992))) (S (VP (TO to) (VP (VB climb) (NP (NP (JJ 28,250-foot) (NN K2)) (, ,) (NP (NP (DT the) (NN world) (POS 's)) (JJ second-highest) (NN peak))))))))) (, ,)) (VP (VBD came) (PRT (RP back)) (NP (NP (ADJP (VBN committed) (PP (TO to) (NP (NP (VBG bettering) (NNS lives)) (PP (IN of) (NP (DT the) (NNP Balti)))))) (NNS people)) (SBAR (WHNP (WP who)) (S (VP (VBD served) (PP (IN as) (NP (NNS porters))) (PP (IN on) (NP (PRP$ his) (NN climb)))))))) (. .)))
And Mortenson, 43, who went off in 1992 to climb 28,250-foot K2, the world's second-highest peak, came back committed to bettering lives of the Balti people who served as porters on his climb.
(ROOT (S (NP (NNP K2)) (VP (VBZ is) (NP (NP (DT the) (JJ second) (JJS highest) (NN mountain)) (PP (IN in) (NP (DT the) (NN world)))) (, ,) (PP (IN at) (NP (IN over) (CD 28,000) (NNS feet)))) (. .)))