( ( Shredding ( by ( these teeth ) ) ) ( ( involve ( ( a ( side-to-side motion ) ) ( ( using ( the ( sharp edges ) ) ) ( to ( ( grind ( the ( tough ( plant tissues ) ) ) ) ( to ( a pulp ) ) ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBG Shredding) (PP (IN by) (NP (DT these) (NNS teeth))))) (VP (VBP involve) (NP (NP (DT a) (JJ side-to-side) (NN motion)) (VP (VBG using) (NP (DT the) (JJ sharp) (NNS edges)) (S (VP (TO to) (VP (VB grind) (NP (DT the) (JJ tough) (NN plant) (NNS tissues)) (PP (TO to) (NP (DT a) (NN pulp))))))))) (. .)))
Shredding by these teeth involve a side-to-side motion using the sharp edges to grind the tough plant tissues to a pulp.
(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))))))) (. .)))