Question: When was the last time the sixers won a championship?
Disambiguated questions and answers: question: When was the last time the sixers won an nba championship, as of 2017?
When was the last time the sixers won an nba championship, as of 2016?
When was the last time the sixers won an nba championship, as of 2015?
answer: May 31 1983
May 31 1983
May 31 1983
Natural Questions answer: 1983 (from the Wikipedia article "Philadelphia 76ers")