Table:
text: 1981 New York Yankees season
World Series
NL 
 Los Angeles Dodgers 
 (4) vs. AL 
 New York Yankees 
 (2)
Game Score Date_ Location_ Attendance Time_of_Game
1 Dodgers – 3, Yankees – 5 October 20 Yankee Stadium (New York) 56470 2:32
2 Dodgers – 0, Yankees – 3 October 21 Yankee Stadium (New York) 56505 2:29
3 Yankees – 4, Dodgers – 5 October 23 Dodger Stadium (Los Angeles) 56236 3:04
4 Yankees – 7, Dodgers – 8 October 24 Dodger Stadium (Los Angeles) 56242 3:32
5 Yankees – 1, Dodgers – 2 October 25 Dodger Stadium (Los Angeles) 56115 2:19
6 Dodgers – 9, Yankees – 2 October 28 Yankee Stadium (New York) 56513 3:09

Question: What is the first game number with 56,505 viewers for the 1981 New York Yankees season?