A libretto may pertain-to a company.Logical formLearned from3 sentences. A male may have a libretto.Logical formLearned from3 sentences. A libretto can be by a prince.Logical formLearned from3 sentences. A male may write a libretto of an opera.Logical formLearned from3 sentences. A libretto may pertain-to a ballet.Logical formLearned from3 sentences. A libretto can be adapted.Logical formLearned from3 sentences. A revised version may pertain-to a libretto.Logical formLearned from3 sentences. A libretto may undergo reading.Logical formLearned from3 sentences. Librettos can be in a language.Logical formLearned from3 sentences. A libretto may be entitled.Logical formLearned from3 sentences. A libretto can be to some opera.Logical formLearned from3 sentences. A libretto of an opera can be brief.Logical formLearned from3 sentences. A person may write librettos.Logical formLearned from3 sentences. An opera can be with libretto.Logical formLearned from3 sentences. A writer may write a libretto.Logical formLearned from3 sentences.