( Metals ( ( ( are usually ) ( ( solid substances ) ( at ( room temperature ) ) ) ) . ) )
(ROOT (S (NP (NNS Metals)) (VP (VBP are) (ADVP (RB usually)) (NP (NP (JJ solid) (NNS substances)) (PP (IN at) (NP (NN room) (NN temperature))))) (. .)))
Metals are usually solid substances at room temperature .
(ROOT (S (NP (JJS Most) (NNS metals)) (VP (VBP exist) (PP (IN as) (NP (NP (NNS solids)) (PP (IN at) (NP (NN room) (NN temperature)))))) (. .)))