(Business purposes) can be valid.Logical formLearned from16 sentences. An inspection can be valid.Logical formLearned from16 sentences. A reason can be valid.Logical formLearned from16 sentences. Treaties can be valid.Logical formLearned from16 sentences. (Credit cards) can be valid.Logical formLearned from16 sentences. Scientific studies can be valid.Logical formLearned from16 sentences. An invoice can be valid.Logical formLearned from16 sentences. A (refuge hunting permit) can be valid.Logical formLearned from16 sentences. A (repeat fan discount) can be valid.Logical formLearned from16 sentences. Norms can be valid.Logical formLearned from16 sentences. Rates can be valid.Logical formLearned from16 sentences. A usage can be valid.Logical formLearned from16 sentences. A feeling can be valid.Logical formLearned from16 sentences. Thoughts can be valid.Logical formLearned from16 sentences. Viewpoints can be valid.Logical formLearned from16 sentences.