Trainers calculate how their Pokemon's talents match against rivals, a fiendishly complicated task that requires mastering and manipulating information about every monster--a 151-variable algebra problem.
The system that trainers use to calculate their Pokemon's talents is complicated.
Trainers do not match their Pokemon against those of their rivals.
The man is kicking a hole in his wall
A man is looking at the flat desert.
He did not touch the table with his fists.
A boy carries a basebal bat.
Two dogs are in a field.
A group of people sitting around a table.