( ( ( Some types ) ( of bacteria ) ) ( ( are autotrophs ) . ) )
(ROOT (S (NP (NP (DT Some) (NNS types)) (PP (IN of) (NP (NNS bacteria)))) (VP (VBP are) (ADJP (JJ autotrophs))) (. .)))
Some types of bacteria are autotrophs.
(ROOT (S (NP (NNS Photoautotrophs) (CC and) (NNS chemoautotrophs)) (VP (VBP are) (NP (NP (CD two) (JJ basic) (NNS types)) (PP (IN of) (NP (NNS autotrophs))))) (. .)))