( There ( ( have ( been ( ( five ( mass extinctions ) ) ( in ( ( the ( Earth 's ) ) history ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP have) (VP (VBN been) (NP (NP (CD five) (JJ mass) (NNS extinctions)) (PP (IN in) (NP (NP (DT the) (NN Earth) (POS 's)) (NN history)))))) (. .)))
There have been five mass extinctions in the Earth's history.
(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)))))))) (. .)))