mastering its formidable arithmetic of cameras and souls 
(ROOT (S (VP (VBG mastering) (NP (NP (PRP$ its) (JJ formidable) (NN arithmetic)) (PP (IN of) (NP (NNS cameras) (CC and) (NNS souls)))))))
(ROOT (S (VP (VBG ) (NP (NP (PRP$ ) (JJ ) (NN )) (PP (IN ) (NP (NNS ) (CC ) (NNS )))))))