A (guards source) can be unnamed.Logical formLearned from3 sentences. A (defense agency chief) can be unnamed.Logical formLearned from3 sentences. A past can be unnamed.Logical formLearned from3 sentences. (Government department officials) can be unnamed.Logical formLearned from3 sentences. A 31-year-old can be unnamed.Logical formLearned from3 sentences. A secret service can be unnamed.Logical formLearned from3 sentences. A confidante can be unnamed.Logical formLearned from3 sentences. Riders can be unnamed.Logical formLearned from3 sentences. A (special representative) can be unnamed.Logical formLearned from3 sentences. (Negotiation sources) can be unnamed.Logical formLearned from3 sentences. (Investment banking sources) can be unnamed.Logical formLearned from3 sentences. A non can be unnamed.Logical formLearned from3 sentences. A (weather official) can be unnamed.Logical formLearned from3 sentences. A (telephone bidder) can be unnamed.Logical formLearned from3 sentences. A (newspaper editor) can be unnamed.Logical formLearned from3 sentences.