( ( Describe ( ( ( ( at least ) five ) ( major ( biological consequences ) ) ) ( that ( ( such ( a ( mass extinction ) ) ) ( will ( have ( on ( human life ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Describe) (NP (NP (QP (IN at) (JJS least) (CD five)) (JJ major) (JJ biological) (NNS consequences)) (SBAR (IN that) (S (NP (PDT such) (DT a) (JJ mass) (NN extinction)) (VP (MD will) (VP (VB have) (PP (IN on) (NP (JJ human) (NN life))))))))) (. .)))
Describe at least five major biological consequences that such a mass extinction will have on human life.
(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)))))))) (. .)))