Actions may pertain-to an union.Logical formLearned from39 sentences. Unions may warn.Logical formLearned from39 sentences. Members of an union may vote.Logical formLearned from39 sentences. Unions may pertain-to some pilots.Logical formLearned from39 sentences. President may pertain-to a (trade union).Logical formLearned from39 sentences. Participation can be in monetary union.Logical formLearned from39 sentences. A (labor union) can be militant.Logical formLearned from39 sentences. Representative can be from an union.Logical formLearned from38 sentences. Unions may call for a strike.Logical formLearned from38 sentences. A collective-bargaining agreement can be with an union.Logical formLearned from38 sentences. An official can be from an union.Logical formLearned from38 sentences. An union may refuse.Logical formLearned from38 sentences. Unions can be stable.Logical formLearned from38 sentences. (Labor unions) may pertain-to a us-state.Logical formLearned from38 sentences. An union can be in an activist-organization.Logical formLearned from38 sentences.