onto a cross-country road trip of the homeric kind 
(ROOT (PP (IN onto) (NP (NP (DT a) (JJ cross-country) (NN road) (NN trip)) (PP (IN of) (NP (DT the) (JJ homeric) (NN kind))))))
(ROOT (PP (IN ) (NP (NP (DT ) (JJ ) (NN ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))