mostly martha is mostly unsurprising 
(ROOT (S (ADVP (RB mostly)) (NP (NNP martha)) (VP (VBZ is) (ADJP (RB mostly) (JJ unsurprising)))))
(ROOT (S (ADVP (RB )) (NP (NNP )) (VP (VBZ ) (ADJP (RB ) (JJ )))))