That's-- not really answering the question. Bucky's eyes narrow but ultimately he doesn't push. He doesn't like other people asking him too many questions, might growl warily if he's cornered, so he doesn't pry too much in turn either.

"Wow. You're older than Anna Karenina." It's probably not the reaction he was expecting, but it's the first thing that occurs to Bucky. Although, what with the way Bucky says it, deadpan and a mix of surprised, confused and wary, Raskolnikov could have easily mistaken 'Anna Karenina' for a name of an actual lady Bucky knows.