of randomness usually achieved only by lottery drawing 
(ROOT (PP (IN of) (NP (NP (NN randomness)) (VP (ADVP (RB usually)) (VBN achieved) (PP (ADVP (RB only)) (IN by) (NP (NN lottery) (NN drawing)))))))
(ROOT (PP (IN ) (NP (NP (NN )) (VP (ADVP (RB )) (VBN ) (PP (ADVP (RB )) (IN ) (NP (NN ) (NN )))))))