( ( Instead ( of ( water-losing leaves ) ) ) ( , ( cactuses ( ( have spines ) . ) ) ) )
(ROOT (S (PP (RB Instead) (IN of) (NP (JJ water-losing) (NNS leaves))) (, ,) (NP (NNS cactuses)) (VP (VBP have) (VP (VBZ spines))) (. .)))
Instead of water-losing leaves, cactuses have spines.
(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)))))))))) (. .)))