A shovel can be flat.Logical formLearned from21 sentences. Jokes can be flat.Logical formLearned from21 sentences. Dollars can be flat.Logical formLearned from21 sentences. A liar can be flat.Logical formLearned from21 sentences. A (share market) may close flat.Logical formLearned from21 sentences. A plan may fall flat.Logical formLearned from21 sentences. Solar cells can be flat.Logical formLearned from21 sentences. A world can be flat.Logical formLearned from21 sentences. A level surface can be flat.Logical formLearned from21 sentences. A (playing field) can be flat.Logical formLearned from21 sentences. A message may fall flat.Logical formLearned from21 sentences. A structure can be flat.Logical formLearned from21 sentences. A fragrant can be flat.Logical formLearned from21 sentences. A perspective can be flat.Logical formLearned from21 sentences. A peninsula can be flat.Logical formLearned from21 sentences.