( cactus ( ( have ( spines ( ___________________________________________ 6 ) ) ) . ) )
(ROOT (S (NP (NN cactus)) (VP (VBP have) (VP (VBZ spines) (NP (QP (CD ___________________________________________) (CD 6))))) (. .)))
cactus have spines ___________________________________________ 6.
(ROOT (S (NP (NP (DT The) (NNS spines)) (PP (IN of) (NP (DT a) (NN cactus)))) (VP (VBP help) (SBAR (S (NP (PRP it)) (VP (VBP survive) (SBAR (IN because) (S (NP (NNS spines)) (VP (VB protect) (NP (DT the) (NN cactus)) (PP (IN from) (NP (NNS animals)))))))))) (. .)))