( Elements ( ( are ( generally ( classified ( as ( ( ( metals or ) nonmetals ) ( -LRB- ( ( although ( ( ( ( some elements ) ( have ( characteristics ( of both ) ) ) ) ; ) ( these ( are ( called metalloids ) ) ) ) ) -RRB- ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Elements)) (VP (VBP are) (ADJP (RB generally) (VBN classified) (PP (IN as) (NP (NP (NNS metals) (CC or) (NNS nonmetals)) (PRN (-LRB- -LRB-) (SBAR (IN although) (S (S (NP (DT some) (NNS elements)) (VP (VBP have) (NP (NP (NNS characteristics)) (PP (IN of) (NP (DT both)))))) (: ;) (S (NP (DT these)) (VP (VBP are) (VP (VBN called) (NP (NNS metalloids))))))) (-RRB- -RRB-)))))) (. .)))
Elements are generally classified as metals or nonmetals(although some elements have characteristics of both; these are called metalloids).
(ROOT (S (NP (NNS Nonmetals)) (VP (VBP have) (NP (NP (DT the) (JJS highest) (NN attraction)) (PP (IN for) (NP (NNS electrons))))) (. .)))