Complex sentence: Same-sex marriage in the U.S. state of Wisconsin has been legal since October 6,2014, following a decision of the Supreme Court of the United States to refuse an appeal of a decision that found Wisconsin's ban on same-sex marriage unconstitutional.
Split into simpler sentences: Same-sex marriage in the U.S. state of Wisconsin has been legal since October 6,2014, ollowing the resolution of a lawsuit challenging the state's ban on same-sex marriage. On that day, the U.S. Supreme Court's refused to hear an appeal in a case that found Wisconsin's ban on same-sex marriage unconstitutional.