a lump of run-of-the-mill profanity 
(ROOT (NP (NP (DT a) (NN lump)) (PP (IN of) (NP (NML (NML (NN run)) (PP (IN -of) (HYPH -) (NP (DT the) (HYPH -) (NN mill)))) (NN profanity)))))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (NML (NML (NN )) (PP (IN ) (HYPH ) (NP (DT ) (HYPH ) (NN )))) (NN )))))