In baseball in the United States and Canada, the seventh-inning stretch is a tradition that takes place between the halves of the seventh inning of a game -- in the middle of the seventh inning. Fans generally stand up and stretch out their arms and legs and sometimes walk around. It is a popular time to get a late-game snack or an alcoholic beverage as well, as vendors end alcohol sales after the last out of the seventh inning. The stretch also serves as a short break for the players. Most ballparks in professional baseball mark this point of the game by playing the crowd sing-along song ''Take Me Out to the Ball Game''. Since the September 11 attacks, many American ballparks complement or replace the song with the playing of ''God Bless America.'' If a game goes into a fifth extra inning, a similar ''fourteenth-inning stretch'' is celebrated (as well as a possible ''twenty-first inning stretch'' or ''twenty-eighth inning stretch''). In softball games, amateur games scheduled for only seven innings, or in minor-league doubleheaders, a ''fifth-inning stretch'' may be substituted.
Answer this question, making sure that the answer is supported by the text: do all baseball teams sing the 7th inning stretch?

Options: 1. no. 2. yes.
1.