A key may pertain-to a country.Logical formLearned from55 sentences. Keys can be crossed.Logical formLearned from54 sentences. A part may pertain-to a key.Logical formLearned from54 sentences. Keys may undergo an exchange.Logical formLearned from54 sentences. A key can be to a growth.Logical formLearned from54 sentences. A key can be to learning.Logical formLearned from54 sentences. A key can be that something-is-the-case.Logical formLearned from54 sentences. A female may put a key.Logical formLearned from54 sentences. A key can be to profitability.Logical formLearned from54 sentences. A key can be to a fate.Logical formLearned from54 sentences. A female may take a key.Logical formLearned from54 sentences. Keys may pertain-to a piano.Logical formLearned from54 sentences. A key can be to an agreement.Logical formLearned from54 sentences. Keys may pertain-to a city.Logical formLearned from54 sentences. A key can be to a better life.Logical formLearned from53 sentences.