when her material is not first-rate 
(ROOT (SBAR (WHADVP (WRB when)) (S (NP (PRP$ her) (NN material)) (VP (VBZ is) (RB not) (ADJP (JJ first) (HYPH -) (NN rate))))))
(ROOT (SBAR (WHADVP (WRB )) (S (NP (PRP$ ) (NN )) (VP (VBZ ) (RB ) (ADJP (JJ ) (HYPH ) (NN ))))))