( ( The guideways ) ( ( can ( be ( constructed ( in ( three dimensions ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS guideways)) (VP (MD can) (VP (VB be) (VP (VBN constructed) (PP (IN in) (NP (CD three) (NNS dimensions)))))) (. .)))
The guideways can be constructed in three dimensions.
(ROOT (S (NP (NNS Humans)) (VP (MD can) (VP (VB see) (PP (IN in) (NP (CD three) (NNS dimensions))))) (. .)))