Complex sentence: The main concern in the Talmud was whether women who carried out acts, were eligible to marry a the priesthood i.e did this activity remove their status as a virgin, or make them a harlot.
Split into simpler sentences: The main concern in the Talmud was whether women who carried out acts, were eligible to marry a the priesthood. It was doubtful whether this activity removed their status as a virgin, or made them a harlot.