( We ( ( ( are ( dependent ( on plants ) ) ) ( ( not only ) ( ( ( ( for ( oxygen ( , ( ( food and ) fuel ) ) ) ) , ) ( but also ) ) ( for ( ( many ( other benefits ) ) ( including medicine ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP are) (ADJP (JJ dependent) (PP (IN on) (NP (NNS plants)))) (PP (CONJP (RB not) (JJ only)) (PP (IN for) (NP (NN oxygen) (, ,) (NN food) (CC and) (NN fuel))) (, ,) (CONJP (CC but) (RB also)) (PP (IN for) (NP (NP (JJ many) (JJ other) (NNS benefits)) (PP (VBG including) (NP (NN medicine))))))) (. .)))
We are dependent on plants not only for oxygen, food and fuel, but also for many other benefits including medicine.
(ROOT (S (NP (NNS Plants)) (VP (CONJP (RB not) (JJ only)) (VP (VBP contribute) (NP (NN food))) (CC but) (VP (VBD oxygen) (PP (IN for) (NP (NNS organisms))))) (. .)))