300 years of russian history and culture 
(ROOT (NP (NP (CD 300) (NNS years)) (PP (IN of) (NP (JJ russian) (NN history) (CC and) (NN culture)))))
(ROOT (NP (NP (CD ) (NNS )) (PP (IN ) (NP (JJ ) (NN ) (CC ) (NN )))))