An empty string may indicate that something-is-the-case.Logical formLearned from16 sentences. A paragraph can be empty.Logical formLearned from16 sentences. A method can be empty.Logical formLearned from16 sentences. Allegations can be empty.Logical formLearned from16 sentences. (City streets) can be empty.Logical formLearned from16 sentences. Bookcases can be empty.Logical formLearned from16 sentences. A lifeboat can be empty.Logical formLearned from16 sentences. (Hospital beds) can be empty.Logical formLearned from16 sentences. A (school building) can be empty.Logical formLearned from16 sentences. An item can be empty.Logical formLearned from16 sentences. A cache can be empty.Logical formLearned from16 sentences. The universe can be empty.Logical formLearned from16 sentences. Empty bottles can be constituted-of-or-filled-with beer.Logical formLearned from16 sentences. A stream can be empty.Logical formLearned from16 sentences. A deception can be empty.Logical formLearned from16 sentences.