for its excellent storytelling , its economical 
(ROOT (PP (IN for) (NP (NP (PRP$ its) (JJ excellent) (NN storytelling)) (, ,) (NP (PRP$ its) (JJ economical)))))
(ROOT (PP (IN ) (NP (NP (PRP$ ) (JJ ) (NN )) (, ) (NP (PRP$ ) (JJ )))))