Dorian and Abigail play a game of tic-tac-toe. Dorian plays with crosses (x) and Abigail plays with noughts (o). However, we do not know who amongst Dorian and Abigail started this game.

In the game shown below, six moves have already been made:

                       o | o |
                      ---+---+---
                       o | x |
                      ---+---+---
                       x | x |

Who will win the game?