(Login names) can be valid.Logical formLearned from3 sentences. A trade can be valid.Logical formLearned from3 sentences. A viewpoint can be valid in terms.Logical formLearned from3 sentences. Abstract concepts can be valid.Logical formLearned from3 sentences. A xml-file can be valid.Logical formLearned from3 sentences. A (macro name) can be valid.Logical formLearned from3 sentences. A tuple can be valid.Logical formLearned from3 sentences. A message may be considered valid.Logical formLearned from3 sentences. A characterization can be valid.Logical formLearned from3 sentences. A period can be valid.Logical formLearned from3 sentences. Data may stay valid.Logical formLearned from3 sentences. Projections can be valid.Logical formLearned from3 sentences. A law of entropy can be valid for closed systems.Logical formLearned from3 sentences. Ordinations can be valid.Logical formLearned from3 sentences. A product can be valid.Logical formLearned from3 sentences.