Conversation so far:
who won the 2017 nba rookie of the year
Malcolm Brogdon won the 2017 nba rookie of the year
who won the 2017 NBA Most Valuable Player Award
Russell Westbrook won the 2017 NBA Most Valuable Player Award
what basketball team is russell westbrook on
Russell Westbrook is an American professional basketball player for the Houston Rockets.
which division are the houston rockets
The Houston Rockets compete in the National Basketball Association as a member team of the league's Western Conference Southwest Division.

Question: when was the team established
Self-contained rewrite: when were the houston rockets established