 What can you best infer about the characteristics of the people in attendance at the tournament hall that Sandra was at?
Silently, so as not to shock anyone with illusions about well dressed young women, Sandra Lea Grayling cursed the day she had persuaded the Chicago Space Mirror that there would be all sorts of human interest stories to be picked up at the first international grandmaster chess tournament in which an electronic computing machine was entered. This tournament hall seemed to Sandra much further out of the world. Sandra's chief difficulty was that she knew absolutely nothing about the game of chess—a point that she had slid over in conferring with the powers at the Space Mirror , but that now had begun to weigh on her. To either side of the hall were tiers of temporary seats, about half of them occupied.
 They are sharp-minded and determined to win.
 They are arrogant and lackadaisical.  They are sharp-minded and determined to win.  They are confident yet humble.  They are astute and put together.