Operas can be little-known.Logical formLearned from12 sentences. Performances can be at some (opera houses).Logical formLearned from12 sentences. A (rock opera) can be about a female.Logical formLearned from12 sentences. (Spending days) may watch (soap operas).Logical formLearned from12 sentences. A word may come from opera.Logical formLearned from12 sentences. Some operas can be in a cycle.Logical formLearned from12 sentences. An (opera house) may be built.Logical formLearned from12 sentences. (Opera houses) can be in a world-city.Logical formLearned from12 sentences. A (soap opera) can be dark.Logical formLearned from12 sentences. An opera may undergo a completion.Logical formLearned from12 sentences. An orchestra may pertain-to an opera.Logical formLearned from12 sentences. (Opera singers) can be trained.Logical formLearned from12 sentences. A (soap opera) may start.Logical formLearned from12 sentences. An opera may pertain-to a city.Logical formLearned from12 sentences. A part may pertain-to a (soap opera).Logical formLearned from12 sentences.