Gaps may undergo a creation.Logical formLearned from16 sentences. A gap can be between a mountain.Logical formLearned from16 sentences. An (income gap) may narrow.Logical formLearned from16 sentences. A gap can be between wings.Logical formLearned from16 sentences. A gap can be between a state.Logical formLearned from16 sentences. Persons may fill gaps.Logical formLearned from16 sentences. A gap can be in history.Logical formLearned from16 sentences. Some gaps can be in a record.Logical formLearned from16 sentences. Gaps can be in a training.Logical formLearned from16 sentences. A gap can be operational.Logical formLearned from16 sentences. A gap can be in (life expectancy).Logical formLearned from16 sentences. Gaps can be in (student achievement).Logical formLearned from16 sentences. A gap can be troublesome.Logical formLearned from16 sentences. Gaps may appear.Logical formLearned from16 sentences. A gap can be between fundamental research.Logical formLearned from16 sentences.