Table: mario_netos_frc5_win
Columns: res
record
opponent
method
event
round
time

Question: What opponent uses the method of decision and a 5-3 record?
SQL: SELECT "opponent" FROM mario_netos_frc5_win WHERE "method" = 'decision' AND "record" = '5-3'

Question: What round has the highest Res loss, and a time of 40:00?
SQL: SELECT MAX("round") FROM mario_netos_frc5_win WHERE "res" = 'loss' AND "time" = '40:00'