( ( ( Tell ( the children ) ) ( that ( ( ( the spines ) ( on ( the cactus ) ) ) ( ( are there ) ( for ( a ( few ( different reasons ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Tell) (NP (DT the) (NNS children)) (SBAR (IN that) (S (NP (NP (DT the) (NNS spines)) (PP (IN on) (NP (DT the) (NN cactus)))) (VP (VBP are) (ADVP (RB there)) (PP (IN for) (NP (DT a) (JJ few) (JJ different) (NNS reasons))))))) (. .)))
Tell the children that the spines on the cactus are there for a few different reasons.
(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)))))))))) (. .)))