( ( The report ) ( ( noted ( that ( ( ( asteroids and ) comets ) ( have ( collided ( with ( ( the Earth ) ( in ( ( ( ( ( ( ( the past ) ( to ( either ( bringing ( ( the essentials ) ( of life ) ) ) ) ) ) -LRB- ) ( ( carbon and ) water ) ) -RRB- ) or ) ( ( extinguishing life ) ( -LRB- ( ( dinosaur extinction ) -RRB- ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN report)) (VP (VBD noted) (SBAR (IN that) (S (NP (NNS asteroids) (CC and) (NNS comets)) (VP (VBP have) (VP (VBN collided) (PP (IN with) (NP (NP (DT the) (NN Earth)) (PP (IN in) (NP (NP (NP (NP (DT the) (NN past)) (PP (TO to) (S (VP (ADVP (RB either)) (VBG bringing) (NP (NP (DT the) (NNS essentials)) (PP (IN of) (NP (NN life)))))))) (-LRB- -LRB-) (NP (NN carbon) (CC and) (NN water)) (-RRB- -RRB-)) (CC or) (NP (NP (VBG extinguishing) (NN life)) (PRN (-LRB- -LRB-) (NP (NN dinosaur) (NN extinction)) (-RRB- -RRB-)))))))))))) (. .)))
The report noted that asteroids and comets have collided with the Earth in the past to either bringing the essentials of life (carbon and water) or extinguishing life (dinosaur extinction).
(ROOT (S (PP (IN In) (NP (DT the) (NN past))) (, ,) (NP (NP (NNS asteroids)) (VP (VBG colliding) (PP (IN with) (NP (NN planet) (NN earth))))) (VP (VBZ has) (VP (VBN caused) (NP (JJ many) (NNS organisms)) (S (VP (TO to) (VP (VB die) (PRT (RP off))))))) (. .)))