( ( In protists ) ( , ( they ( often ( ( lie ( at ( ( the bottom ) ( of ( flagellar ( ( pockets or ) reservoirs ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (IN In) (NP (NNS protists))) (, ,) (NP (PRP they)) (ADVP (RB often)) (VP (VBP lie) (PP (IN at) (NP (NP (DT the) (NN bottom)) (PP (IN of) (NP (NN flagellar) (NNS pockets) (CC or) (NNS reservoirs)))))) (. .)))
In protists, they often lie at the bottom of flagellar pockets or reservoirs.
(ROOT (S (NP (JJ Multiple) (NN fission)) (VP (VBZ is) (ADVP (RBR more) (RB often)) (VP (VBN observed) (PP (IN among) (NP (NNS protists))))) (. .)))