bottom-of-the-bill fare 
(ROOT (NP (NML (NML (NN bottom)) (HYPH -) (PP (IN of) (HYPH -) (NP (DT the) (HYPH -) (NN bill)))) (NN fare)))
(ROOT (NP (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (DT ) (HYPH ) (NN )))) (NN )))