A (computer system) may pertain-to an exchange.Logical formLearned from22 sentences. Exchanges can be between sides.Logical formLearned from22 sentences. Exchange can be for stopping.Logical formLearned from22 sentences. Shares may fall some percent on a (stock exchange).Logical formLearned from22 sentences. Some persons may be wounded in exchanges of fire.Logical formLearned from22 sentences. Exchange can be for self-rule.Logical formLearned from22 sentences. Exchanges may stall.Logical formLearned from22 sentences. Exchange can be for consent.Logical formLearned from22 sentences. Exchange can be for some nuclear-power plants.Logical formLearned from22 sentences. Exchange can be for give_upping a demand.Logical formLearned from22 sentences. Exchanges may resume.Logical formLearned from22 sentences. (Artillery exchanges) may continue.Logical formLearned from22 sentences. Exchange can be for an easing of economic sanctions.Logical formLearned from22 sentences. A country may have an (exchange rate policy).Logical formLearned from22 sentences. An (exchange rate policy) can be with an euro.Logical formLearned from22 sentences.