( ( Bond types ) ( ( include ( ( covalent ( , ( ionic ( , ( ( metalic and ) hydrogen ) ) ) ) ) bonds ) ) . ) )
(ROOT (S (NP (NNP Bond) (NNS types)) (VP (VBP include) (NP (ADJP (JJ covalent) (, ,) (JJ ionic) (, ,) (JJ metalic) (CC and) (JJ hydrogen)) (NNS bonds))) (. .)))
Bond types include covalent, ionic, metalic and hydrogen bonds.
(ROOT (S (NP (NN Hydrogen) (NN chloride)) (VP (VBZ is) (NP (DT a) (JJ covalent) (NN compound))) (. .)))