( It ( ( includes ( ( ( grinding spheres ) , ) ( which ( are ( ( vortexed ( with ( frozen ( plant tissue ) ) ) ) ( to ( break ( open ( tough ( cell walls ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ includes) (NP (NP (VBG grinding) (NNS spheres)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBN vortexed) (PP (IN with) (NP (JJ frozen) (NN plant) (NN tissue))) (S (VP (TO to) (VP (VB break) (NP (JJ open) (JJ tough) (NN cell) (NNS walls))))))))))) (. .)))
It includes grinding spheres, which are vortexed with frozen plant tissue to break open tough cell walls.
(ROOT (S (NP (NN Ground) (NN tissue)) (VP (VBZ makes) (PRT (RP up)) (NP (NP (JJS most)) (PP (IN of) (NP (NP (DT the) (NN inside)) (PP (IN of) (NP (DT a) (NN plant))))))) (. .)))