An opera may pertain-to a US-president.Logical formLearned from49 sentences. A part may pertain-to an opera.Logical formLearned from49 sentences. An opera can be czech.Logical formLearned from49 sentences. A (soap opera) may continue.Logical formLearned from49 sentences. Roles can be in operas.Logical formLearned from49 sentences. An opera may be entitled.Logical formLearned from49 sentences. Operas can be by composers.Logical formLearned from48 sentences. A career can be as an (opera singer).Logical formLearned from48 sentences. An opera can be by composer.Logical formLearned from48 sentences. An opera can be by a composer.Logical formLearned from48 sentences. (Opera companies) can be regional.Logical formLearned from48 sentences. An opera can be over.Logical formLearned from48 sentences. An opera may be written/wrote.Logical formLearned from47 sentences. Work can be an opera.Logical formLearned from47 sentences. (Soap operas) may pertain-to a person.Logical formLearned from47 sentences.