A mechanism may change.Logical formLearned from16 sentences. Mechanisms can be for feedback.Logical formLearned from16 sentences. Mechanisms may check an (expiration status).Logical formLearned from16 sentences. A mechanism can be pharmacological.Logical formLearned from16 sentences. Some mechanism may be needed.Logical formLearned from16 sentences. A mechanism can be organized.Logical formLearned from16 sentences. A mechanism can be meaningful.Logical formLearned from16 sentences. A mechanism may evolve.Logical formLearned from16 sentences. A mechanism can be psychic.Logical formLearned from16 sentences. A mechanism can be inadequate.Logical formLearned from16 sentences. An existence may pertain-to a mechanism.Logical formLearned from16 sentences. Persons may examine a mechanism.Logical formLearned from16 sentences. A (storage mechanism) can be persistent.Logical formLearned from16 sentences. Reliance can be on mechanisms.Logical formLearned from16 sentences. A (dispute settlement mechanism) can be effective.Logical formLearned from16 sentences.