Justin Alaric Holiday (born April 5, 1989) is an American professional basketball player for the Chicago Bulls of the National Basketball Association (NBA). He played college basketball for the University of Washington. He won an NBA championship in 2015 as a member of the Golden State Warriors.
The Golden State Warriors would achieve their first NBA championship some time after 2015.
Since they won a championship in 2015, they wouldn't have won their first championship after 2015. Maybe because the team isn't the subject of the context, the AI wasn't focused on calculations regarding it.