(Libretto pictures) can be sexual.Logical formLearned from19 sentences. A version may pertain-to a libretto.Logical formLearned from18 sentences. Libretto can be by a composer.Logical formLearned from17 sentences. A libretto can be by a composer.Logical formLearned from17 sentences. A libretto may happen.Logical formLearned from17 sentences. A libretto may be written/wrote by a female.Logical formLearned from16 sentences. An author may pertain-to a libretto.Logical formLearned from16 sentences. A comic opera can be with a libretto.Logical formLearned from16 sentences. A basis may pertain-to a libretto.Logical formLearned from15 sentences. A libretto can be irreducible.Logical formLearned from15 sentences. An (opera libretto) may pertain-to a male.Logical formLearned from14 sentences. A libretto can be for a female.Logical formLearned from14 sentences. A libretto may be based.Logical formLearned from14 sentences. A libretto may be written/wrote by a male.Logical formLearned from13 sentences. A libretto can be revised.Logical formLearned from13 sentences.