A libretto can be by a composer.Logical formLearned from39 sentences. Libretto can be by a female.Logical formLearned from35 sentences. A libretto can be for an opera.Logical formLearned from34 sentences. A libretto may undergo a translation.Logical formLearned from33 sentences. A libretto can be in a language.Logical formLearned from31 sentences. A libretto may undergo a setting.Logical formLearned from30 sentences. A libretto may pertain-to a person.Logical formLearned from24 sentences. A male may write a libretto.Logical formLearned from24 sentences. A copy may pertain-to a libretto.Logical formLearned from23 sentences. A libretto can be for an opera.Logical formLearned from22 sentences. A libretto can be by a female.Logical formLearned from21 sentences. A libretto can be in a language.Logical formLearned from21 sentences. A libretto may be based on a play.Logical formLearned from20 sentences. A libretto may pertain-to a composer.Logical formLearned from20 sentences. A libretto may be written/wrote by a composer.Logical formLearned from19 sentences.