( ( The tentacles ) ( ( have ( ( ( brought ( the zooplankton ) ) ( into ( the ( gastrovascular cavity ) ) ) ) ( so ( ( internal digestion ) ( can begin ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS tentacles)) (VP (VBP have) (VP (VBN brought) (NP (DT the) (NN zooplankton)) (PP (IN into) (NP (DT the) (NN gastrovascular) (NN cavity))) (SBAR (IN so) (S (NP (JJ internal) (NN digestion)) (VP (MD can) (VP (VB begin))))))) (. .)))
The tentacles have brought the zooplankton into the gastrovascular cavity so internal digestion can begin.
(ROOT (S (NP (NNP Digestion)) (VP (VBZ begins) (PP (IN in) (NP (DT the) (NN gastrovascular) (NN cavity)))) (. .)))