An (opera house) may undergo a reconstruction.Logical formLearned from12 sentences. Hundreds can be constituted-of-or-filled-with operas.Logical formLearned from11 sentences. An (opera theater) may pertain-to a world-city.Logical formLearned from11 sentences. Arias can be from operas.Logical formLearned from11 sentences. A performance can be in an opera.Logical formLearned from11 sentences. A male can be (baritone opera singer).Logical formLearned from11 sentences. A male may sing in operas.Logical formLearned from11 sentences. A male may perform in (opera houses).Logical formLearned from11 sentences. An (opera festival) can be international.Logical formLearned from11 sentences. An (opera scene) can be international.Logical formLearned from11 sentences. A member may pertain-to an opera.Logical formLearned from11 sentences. A male may write a number of operas.Logical formLearned from11 sentences. A discography may pertain-to an opera.Logical formLearned from11 sentences. An opera may be written/wrote.Logical formLearned from11 sentences. A contribution can be to opera.Logical formLearned from11 sentences.