John worked as a football trainer in an english college. his training was very good. he trained his players to run, jump, swim and row. they were tall and strong, they always took parts in different races and competitions and every time they did it they won. they trained regulary, did a lot of exercises and kept to a diet. the playes often joined footbal matches and they almost always won. but there was a problem - the players were too bad pupils. it was difficult for them to study. once the professor had to ask a few questions to one of the football players and he asked john to take him to his room. the questions were easy, but the player couldn't find the answers. at the end the professor asked: "well, what's five times time? the football player thought for a quite long time and said: "twenty-six". the professor looked at the trainer amazedly and said: "at all, i don't want to punish your team, but you see - although he is a very good football player, his knowledge is little. that's not enough to be a student". john answered: "please, professor, let him be a student! he was only wrong by two".