A ratio may pertain-to a quantity.Logical formLearned from6 sentences. Uncertainties can be in (hardness ratios).Logical formLearned from6 sentences. Uncertainties can be on (hardness ratios).Logical formLearned from6 sentences. Uncertainties can be in (hardness ratios) of sources.Logical formLearned from6 sentences. An uncertainty can be in a (hardness ratio).Logical formLearned from6 sentences. (Hardness ratios) may use a method.Logical formLearned from6 sentences. (Hardness ratios) can be constituted-of-or-filled-with sources.Logical formLearned from6 sentences. Ratios may pertain-to a country.Logical formLearned from6 sentences. A ratio can be a measurement.Logical formLearned from6 sentences. A ratio may pertain-to materials.Logical formLearned from6 sentences. An (employment ratio) can be high.Logical formLearned from6 sentences. A ratio can be in a case.Logical formLearned from6 sentences. A ratio may pertain-to water.Logical formLearned from6 sentences. A ratio may pertain-to a district.Logical formLearned from6 sentences. A ratio can be between students.Logical formLearned from6 sentences.