Original sentence: The Federal Marriage Amendment (FMA) is a proposed amendment to the United States Constitution that legislates a federal definition of marriage as a union of a man and a woman and prevents subsequent legislative and court action from extending marriage-like rights to same-sex and other unmarried couples
Edited sentence: The Federal Marriage Amendment (FMA) is a proposed amendment to the United States Constitution that legislates a federal definition of marriage as a union of a man and a woman and prevents subsequent legislative and court action from extending marriage rights to same-sex couples and relationships involving more than two people