middle-of-the-road blandness 
(ROOT (NP (ADJP (JJ middle) (HYPH -) (PP (IN of) (HYPH -) (NP (DT the) (HYPH -) (NN road)))) (NN blandness)))
(ROOT (NP (ADJP (JJ ) (HYPH ) (PP (IN ) (HYPH ) (NP (DT ) (HYPH ) (NN )))) (NN )))