A (protest concert) may pertain-to a city.Logical formLearned from12 sentences. Persons may postpone a concert.Logical formLearned from12 sentences. A (concert tour) can be worldwide.Logical formLearned from12 sentences. Advance may pertain-to a concert.Logical formLearned from12 sentences. A special effect can be during a concert.Logical formLearned from12 sentences. A concert may delay evacuation from a hall.Logical formLearned from12 sentences. A (concert promoter) may pertain-to a country.Logical formLearned from12 sentences. A band may play a concert.Logical formLearned from12 sentences. Organisers may pertain-to a concert.Logical formLearned from12 sentences. A (concert comeback) may pertain-to a month.Logical formLearned from12 sentences. A (concert comeback) can be at a time of a death.Logical formLearned from12 sentences. A concert may be performed.Logical formLearned from12 sentences. A concert can be by star.Logical formLearned from12 sentences. Activities may be linked to concerts.Logical formLearned from12 sentences. A concert may be given by an orchestra.Logical formLearned from12 sentences.