Table: fighter_match_25
Columns: res
record
opponent
method
event
round
time
location

Question: What is the sum of the rounds of the match with brett chism as the opponent?
SQL: SELECT SUM("round") FROM fighter_match_25 WHERE "opponent" = 'brett chism'

Question: What is the lwoest round of wild bill's fight night 21 at 5:00?
SQL: SELECT MIN("round") FROM fighter_match_25 WHERE "time" = '5:00' AND "event" = 'wild bill''s fight night 21'