Regulations may undergo a strengthening.Logical formLearned from12 sentences. A government may issue a series of regulations.Logical formLearned from12 sentences. Construction may undergo a regulation.Logical formLearned from12 sentences. Regulations may be issued on a month.Logical formLearned from12 sentences. A world-city may issue a regulation.Logical formLearned from12 sentences. A regulation can be valid.Logical formLearned from12 sentences. Regulations may undergo an establishment.Logical formLearned from12 sentences. Articles may pertain-to regulations.Logical formLearned from12 sentences. (Survey regulations) can be short-lived.Logical formLearned from12 sentences. Doctors may undergo a regulation.Logical formLearned from12 sentences. A regulation can be short-term.Logical formLearned from12 sentences. A challenge can be to a regulation.Logical formLearned from12 sentences. (Visa regulations) can be tough.Logical formLearned from12 sentences. (Abortion clinics) may undergo a regulation.Logical formLearned from12 sentences. Communication may undergo a regulation.Logical formLearned from12 sentences.