( ( ( ( ( Most metals ) , ) ( like ( this aluminum ) ) ) , ) ( are ( solids ( at ( room ( temperature ( . USGS ) ) ) ) ) ) )
(ROOT (S (NP (NP (JJS Most) (NNS metals)) (, ,) (PP (IN like) (NP (DT this) (NN aluminum))) (, ,)) (VP (VBP are) (ADJP (JJ solids) (PP (IN at) (NP (NN room) (NNP temperature) (. .) (NNP USGS)))))))
Most metals, like this aluminum, are solids at room temperature.  USGS
(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)))))) (. .)))