(S (S (NP (BASENP (DT The) (NNP Canada) (NNP Revenue) (NNP Agency)) (PRN (LRB -LRB-) (BASENP (NNP CRA)) (RRB -RRB-))) (VP (VP (VBD announced) (BASENP (NN today))) (SBAR (IN that) (S (NP (BASENP (NN computer) (NNS systems)) (VP (VBN involved) (PP (IN with) (NP (BASENP (DT the) (NN processing)) (PP (IN of) (NP (BASENP (NN tax) (NNS returns)) (PP (IN for) (BASENP (NNS individuals))))))))) (VP (VBP are) (ADJP (RB back) (JJ online))))))) (PERIOD .))