( Insects ( ( play ( ( an ( important role ) ) ( in ( recycling ( dead ( plant material ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Insects)) (VP (VBP play) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (VBG recycling) (JJ dead) (NN plant) (NN material))))) (. .)))
Insects play an important role in recycling dead plant material.
(ROOT (S (NP (NP (DT A) (NN role)) (PP (IN of) (NP (NP (NNS mushrooms)) (PP (IN in) (NP (NNS ecosystems)))))) (VP (VBZ is) (VP (VBG breaking) (PRT (RP down)) (NP (JJ dead) (NN plant) (NN material)))) (. .)))