( It ( ( ( ( 's not ) ( metal-metal bonding ) ) ( so ( it ( ( does n't ) ( have ( heavy ( metal properties ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (RB not) (NP (JJ metal-metal) (NN bonding)) (SBAR (IN so) (S (NP (PRP it)) (VP (VBZ does) (RB n't) (VP (VB have) (NP (JJ heavy) (NN metal) (NNS properties))))))) (. .)))
It's not metal-metal bonding so it doesn't have heavy metal properties.
(ROOT (S (NP (DT The) (JJ metallic) (NN bond)) (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (NP (NP (DT the) (NNS properties)) (PP (IN of) (NP (NNS metals))))))) (. .)))