S -> NP VP     (0.75)
S -> VP        (0.25)
NP -> Adj N    (0.33)
NP -> Det N    (0.57) 
NP -> N        (0.10)
VP -> V NP     (0.67)
VP -> V NP PNP (0.12)
VP -> V PNP    (0.21)
PNP -> Prep NP (1)