as visually bland as a dentist 's waiting room 
(ROOT (ADJP (ADJP (RB as) (RB visually) (JJ bland)) (PP (IN as) (NP (NP (DT a) (NN dentist) (POS 's)) (NN waiting) (NN room)))))
(ROOT (ADJP (ADJP (RB ) (RB ) (JJ )) (PP (IN ) (NP (NP (DT ) (NN ) (POS )) (NN ) (NN )))))