A button can be flat.Logical formLearned from18 sentences. Paintings can be flat.Logical formLearned from18 sentences. A village can be flat.Logical formLearned from18 sentences. Routes can be flat.Logical formLearned from18 sentences. Some miles can be flat.Logical formLearned from18 sentences. A benchmark can be flat.Logical formLearned from18 sentences. (Refinery utilization) may remain flat.Logical formLearned from18 sentences. A (desert landscape) can be flat.Logical formLearned from18 sentences. Construction can be flat.Logical formLearned from18 sentences. Inventories of goods can be flat.Logical formLearned from18 sentences. A game can be flat.Logical formLearned from18 sentences. A (morning session) can be flat.Logical formLearned from18 sentences. A seafloor can be flat.Logical formLearned from18 sentences. Trading can be flat.Logical formLearned from18 sentences. A single currency can be flat.Logical formLearned from18 sentences.