, shiri is a must for genre fans . 
(ROOT (S (, ,) (NP (NNP shiri)) (VP (VBZ is) (NP (NP (DT a) (NN must)) (PP (IN for) (NP (NN genre) (NNS fans))))) (. .)))
(ROOT (S (, ) (NP (NNP )) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ) (NNS ))))) (. )))