A role can be in promotting exchanges.Logical formLearned from26 sentences. Exchanges can be between governments.Logical formLearned from26 sentences. Exchange can be for a contract.Logical formLearned from26 sentences. Exchange can be for some years.Logical formLearned from26 sentences. An exchange can be rational.Logical formLearned from26 sentences. A (dollar exchange rate) may pertain-to a world-city.Logical formLearned from26 sentences. Exchanges can be strong.Logical formLearned from26 sentences. Exchange can be between individuals.Logical formLearned from26 sentences. Free exchange can be constituted-of-or-filled-with data.Logical formLearned from26 sentences. A program can be constituted-of-or-filled-with exchange.Logical formLearned from26 sentences. An exchange can be turbulent.Logical formLearned from26 sentences. An exchange can be nontaxable.Logical formLearned from26 sentences. Exchange can be between students.Logical formLearned from26 sentences. An exchange can be isotopic.Logical formLearned from26 sentences. A set can be constituted-of-or-filled-with exchanges.Logical formLearned from26 sentences.