An opera can be with libretto.Logical formLearned from7 sentences. A libretto may pertain-to a ballet.Logical formLearned from7 sentences. Librettos may pertain-to operas.Logical formLearned from7 sentences. A libretto can be by scribe.Logical formLearned from7 sentences. A libretto may be translated into a language.Logical formLearned from7 sentences. A libretto may pertain-to a composer.Logical formLearned from7 sentences. Parts may pertain-to a libretto.Logical formLearned from7 sentences. Some cds can be with libretto.Logical formLearned from7 sentences. Librettos can be by a male.Logical formLearned from7 sentences. A libretto may undergo a revision.Logical formLearned from7 sentences. A libretto may be based on some play.Logical formLearned from6 sentences. A libretto may be adapted by a male.Logical formLearned from6 sentences. A libretto may survive.Logical formLearned from6 sentences. A libretto can be witty.Logical formLearned from6 sentences. A libretto can be by (de saint-georges).Logical formLearned from6 sentences.