(Arbitration provisions) can be mandatory.Logical formLearned from18 sentences. Factors can be mandatory.Logical formLearned from18 sentences. A (compliance date) can be mandatory.Logical formLearned from18 sentences. A return can be mandatory.Logical formLearned from18 sentences. A psychiatric treatment can be mandatory.Logical formLearned from18 sentences. (Drug sentencing laws) can be mandatory.Logical formLearned from18 sentences. A (student activity fee) can be mandatory.Logical formLearned from18 sentences. Exercises can be mandatory.Logical formLearned from18 sentences. Cases can be mandatory.Logical formLearned from18 sentences. A (pension system) can be mandatory.Logical formLearned from18 sentences. An effect can be mandatory.Logical formLearned from18 sentences. (Recycling programs) can be mandatory.Logical formLearned from18 sentences. Voting can be mandatory for citizens.Logical formLearned from18 sentences. (Education requirements) can be mandatory.Logical formLearned from18 sentences. A minimum wage can be mandatory.Logical formLearned from18 sentences.