If it has ovaries, fallopian tubes, etc and the rest of the hardware needed to birth a child then it is considered female. If said person contains both sets of parts normally found in the respective sexes, then said person should be considered neither sex by whatever committee is deciding eligibility based on certain advantages to be had over either sex by the other. In this instance, this would only be fair to the other athletes. Fairness in this case is determined not by the exception, but the norm. Like mother nature, sometimes life's a bitch.