Concert can be by a singer.Logical formLearned from18 sentences. Promoters may pertain-to a concert.Logical formLearned from18 sentences. Concerts can be in countries.Logical formLearned from18 sentences. A concert can be interesting.Logical formLearned from18 sentences. A concert can be open-air.Logical formLearned from18 sentences. A concert can be organized.Logical formLearned from18 sentences. A series can be constituted-of-or-filled-with (jazz concerts).Logical formLearned from18 sentences. A tour can be constituted-of-or-filled-with concerts.Logical formLearned from18 sentences. A concert can be democratic.Logical formLearned from18 sentences. A (summer concert) can be outdoor.Logical formLearned from18 sentences. Some concerts may be planned.Logical formLearned from18 sentences. A concert can be at an university.Logical formLearned from18 sentences. A person may play at a (tribute concert).Logical formLearned from18 sentences. A (benefit concert) can be in a US-city.Logical formLearned from18 sentences. Proceeds can be from concerts.Logical formLearned from18 sentences.