( ( Since ( ( the beginning ) ( of time ) ) ) ( , ( ( ( ( five or ) six ) ( mass ( extinctions periods ) ) ) ( ( have ( occurred ( that ( ( eliminated ( ( ( ( ( ( between 35 ) % ) and ) 96 ) % ) ( of ( all species ) ) ) ) ( on Earth ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Since) (NP (NP (DT the) (NN beginning)) (PP (IN of) (NP (NN time))))) (, ,) (NP (QP (CD five) (CC or) (CD six)) (JJ mass) (NN extinctions) (NNS periods)) (VP (VBP have) (VP (VBN occurred) (SBAR (IN that) (S (VP (VBD eliminated) (NP (NP (QP (IN between) (CD 35) (NN %) (CC and) (CD 96) (NN %))) (PP (IN of) (NP (DT all) (NN species)))) (PP (IN on) (NP (NNP Earth)))))))) (. .)))
Since the beginning of time, five or six mass extinctions periods have occurred that eliminated between 35 % and 96 % of all species on Earth.
(ROOT (S (NP (EX There)) (VP (VBP have) (VP (VBN been) (NP (CD five) (JJ major) (JJ massive) (NNS extinctions)) (SBAR (IN since) (S (NP (NN life)) (VP (VBD began) (PP (IN on) (NP (NN earth)))))))) (. .)))