been replaced with morph , a cute alien creature who mimics everyone and everything around 
(ROOT (S (VP (VBN been) (VP (VBN replaced) (PP (IN with) (NP (NP (NN morph)) (, ,) (NP (NP (DT a) (JJ cute) (JJ alien) (NN creature)) (SBAR (WHNP (WP who)) (S (VP (VBZ mimics) (NP (NP (NN everyone) (CC and) (NN everything)) (ADVP (RB around)))))))))))))
(ROOT (S (VP (VBN ) (VP (VBN ) (PP (IN ) (NP (NP (NN )) (, ) (NP (NP (DT ) (JJ ) (JJ ) (NN )) (SBAR (WHNP (WP )) (S (VP (VBZ ) (NP (NP (NN ) (CC ) (NN )) (ADVP (RB )))))))))))))