(Labor unions) may pertain-to persons.Logical formLearned from62 sentences. An union can be perfect.Logical formLearned from62 sentences. Unions can be influential.Logical formLearned from62 sentences. An union can be other.Logical formLearned from62 sentences. An agreement may pertain-to an union.Logical formLearned from62 sentences. An union may fear that something-is-the-case.Logical formLearned from62 sentences. A world-city may rugb union.Logical formLearned from62 sentences. Unions may argue.Logical formLearned from62 sentences. Protests can be by unions.Logical formLearned from62 sentences. An union may pertain-to farmers.Logical formLearned from62 sentences. A strike can be by an union.Logical formLearned from62 sentences. (Union leaders) may warn that something-is-the-case.Logical formLearned from62 sentences. Virtue may pertain-to an union.Logical formLearned from61 sentences. An union can be constituted-of-or-filled-with some countries.Logical formLearned from61 sentences. An union can be constituted-of-or-filled-with some persons.Logical formLearned from61 sentences.