(S (S (BASENP (NN Maintenance) (CC and) (NN updating) (NNS processes)) (VP (VBP are) (ADJP (JJ dependent) (PP (IN on) (NP (BASENP (QP (RB just) (NN one)) (NN percent)) (PP (IN of) (BASENP (PRPD their) (NNS users)))))))) (PERIOD .))