instead gets ( sci-fi ) rehash 
(ROOT (SINV (ADVP (RB instead)) (VP (VBZ gets) (NP (-LRB- -LRB-) (NML (NN sci) (NN -fi)) (-RRB- -RRB-) (NN rehash)))))
(ROOT (SINV (ADVP (RB )) (VP (VBZ ) (NP (-LRB- ) (NML (NN ) (NN )) (-RRB- ) (NN )))))