Question: When was the last time the sixers won a championship?
qaPairs: question: When was the last time the sixers won an nba championship, as of 2017?
answer: May 31 1983
question: When was the last time the sixers won an nba championship, as of 2016?
answer: May 31 1983
question: When was the last time the sixers won an nba championship, as of 2015?
answer: May 31 1983