Electricity purchase and sale contracts with an arbitration clause between energy generators and a mixed-capital company (Copel Distribuição S/A). Citizen's action seeking the annulment of the contracts on the grounds of alleged misappropriation of public funds. The existence of an arbitration agreement should not lead to the dismissal of the citizen's action because the latter does not seek to challenge the validity of the arbitration clause or to annul the arbitration awards already rendered. Dismissal of the citizen's action on account of the failure to demonstrate irregularities in the contracts and because these had already been terminated by arbitration awards: