A correspondent can be unnamed.Logical formLearned from14 sentences. A reader can be unnamed.Logical formLearned from14 sentences. Negotiators can be unnamed.Logical formLearned from14 sentences. A hostage can be unnamed.Logical formLearned from14 sentences. An (embassy official) can be unnamed.Logical formLearned from14 sentences. An envoy can be unnamed.Logical formLearned from14 sentences. Bishops can be unnamed.Logical formLearned from14 sentences. Traders can be unnamed.Logical formLearned from14 sentences. Airlines can be unnamed.Logical formLearned from14 sentences. A negotiator can be unnamed.Logical formLearned from14 sentences. An activist can be unnamed.Logical formLearned from14 sentences. Currencies can be unnamed.Logical formLearned from14 sentences. A (lorry driver) can be unnamed.Logical formLearned from14 sentences. (Club sources) can be unnamed.Logical formLearned from14 sentences. A guard can be unnamed.Logical formLearned from14 sentences.