a visit to mcdonald 's , let alone 
(ROOT (NP (NP (NP (DT a) (NN visit)) (PP (IN to) (NP (NNP mcdonald) (POS 's)))) (, ,) (ADVP (VB let) (JJ alone))))
(ROOT (NP (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNP ) (POS )))) (, ) (ADVP (VB ) (JJ ))))