Singers may pertain-to a generation.Logical formLearned from12 sentences. (Lead singer) may leave a group.Logical formLearned from12 sentences. A singer may represent a country.Logical formLearned from12 sentences. References may pertain-to a singer.Logical formLearned from12 sentences. A singer may perform a concert.Logical formLearned from12 sentences. A show may be headlined by a singer.Logical formLearned from12 sentences. A reign may pertain-to a singer.Logical formLearned from12 sentences. A singer may be knowned as a vocalist.Logical formLearned from12 sentences. Singers can be in a world-city.Logical formLearned from12 sentences. An (opera singer) can be noted.Logical formLearned from12 sentences. A singer may be incorporated.Logical formLearned from12 sentences. A male may co-star with a singer.Logical formLearned from12 sentences. Songs can be with a singer.Logical formLearned from12 sentences. A female may work with a singer.Logical formLearned from12 sentences. A singer can be washed-up.Logical formLearned from12 sentences.