A drain can be on foreign exchange.Logical formLearned from13 sentences. An exchange may pertain-to some countries.Logical formLearned from13 sentences. An exchange may pertain-to night.Logical formLearned from13 sentences. Exchange of visits may increase.Logical formLearned from13 sentences. A country may support exchanges.Logical formLearned from13 sentences. Exchanges can be among nations.Logical formLearned from13 sentences. An exchange can be in a legislature.Logical formLearned from13 sentences. Exchanges can be between parliaments of a country.Logical formLearned from13 sentences. Exchanges may reopen.Logical formLearned from13 sentences. Academics may undergo exchanges.Logical formLearned from13 sentences. Exchanges may develop.Logical formLearned from13 sentences. (Mail service) may undergo exchanges.Logical formLearned from13 sentences. Exchanges can be in a field.Logical formLearned from13 sentences. Exchange can be for crackdown.Logical formLearned from13 sentences. Summits may undergo an exchange.Logical formLearned from13 sentences.