Complex sentence: Marriages between a Catholic and an unbaptized person are not sacramental, and fall under the impediment of disparity of worship, and are invalid without a dispensation, for which authority lies with the bishop ordinary of the place of marriage.
Split into simpler sentences: Marriages between a Catholic and an unbaptized person are not sacramental and fall under the impediment of disparity of worship. They are invalid without a dispensation, for which authority lies with the bishop ordinary of the place of marriage.