Xenia, our tour guide. Exceptionally knowledgeable in Russian history. Also feisty. Argued constantly with museum caretakers who wanted us to keep moving. "We paid our fee, so we will see the exhibits," she told them. Also argued with us. "Keep up," she would say, "You tell me you can't hear me, but you won't keep up." Then somebody asked a question and she told them, "It seems the me that I've already told you that many times."