half the fun of college football games 
(ROOT (NP (NP (PDT half) (DT the) (NN fun)) (PP (IN of) (NP (NML (NN college) (NN football)) (NNS games)))))
(ROOT (NP (NP (PDT ) (DT ) (NN )) (PP (IN ) (NP (NML (NN ) (NN )) (NNS )))))