( They ( ( will ( turn ( in ( drawings ( of ( ( observed protists ) ( in samples ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD will) (VP (VB turn) (PP (IN in) (NP (NP (NNS drawings)) (PP (IN of) (NP (NP (ADJP (JJ observed)) (NNS protists)) (PP (IN in) (NP (NNS samples))))))))) (. .)))
They will turn in drawings of observed protists in samples.
(ROOT (S (NP (JJ Multiple) (NN fission)) (VP (VBZ is) (ADVP (RBR more) (RB often)) (VP (VBN observed) (PP (IN among) (NP (NNS protists))))) (. .)))