Provisions can be for detection of usage.Logical formLearned from9 sentences. A usage can be arbitrary.Logical formLearned from9 sentences. A usage may pertain-to a key.Logical formLearned from9 sentences. A usage may pertain-to a label.Logical formLearned from9 sentences. A usage may pertain-to a year.Logical formLearned from9 sentences. Usage may pertain-to a building.Logical formLearned from9 sentences. A basis may pertain-to a usage.Logical formLearned from9 sentences. A usage may pertain-to a US-city.Logical formLearned from9 sentences. Usage may pertain-to a property.Logical formLearned from9 sentences. A usage may pertain-to materials.Logical formLearned from9 sentences. A usage may pertain-to pages.Logical formLearned from9 sentences. Information can be about a usage of pages.Logical formLearned from9 sentences. A usage can be ambiguous.Logical formLearned from9 sentences. Usage can be feasible.Logical formLearned from9 sentences. Usage may shift.Logical formLearned from9 sentences.