( ( Some ( ( mushrooms and ) fungi ) ) ( ( ( grow ( out ( of ( dead ( ( plants and ) animals ) ) ) ) ) ( to ( help ( ( break them ) down ) ) ) ) . ) )
(ROOT (S (NP (DT Some) (NNS mushrooms) (CC and) (NNS fungi)) (VP (VBP grow) (ADVP (IN out) (PP (IN of) (NP (JJ dead) (NNS plants) (CC and) (NNS animals)))) (S (VP (TO to) (VP (VB help) (VP (VB break) (NP (PRP them)) (PRT (RP down))))))) (. .)))
Some mushrooms and fungi grow out of dead plants and animals to help break them down.
(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)))) (. .)))