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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _is_in_keep_going(self, x, y):
 """Checks if the mouse is in the keep going button, and if the won overlay is shown."""

        x1, y1, x2, y2 = self._keep_going
        return self.won == 1 and x1 <= x < x2 and y1 <= y < y2