Table: fighter_results_55
Columns: res
record
opponent
method
event
round
time
location

Question: Name the Round that has Res of win and an Opponent of demian maia?
SQL: SELECT SUM("round") FROM fighter_results_55 WHERE "res" = 'win' AND "opponent" = 'demian maia'

Question: which Event that has an Opponent of kendall grove?
SQL: SELECT "event" FROM fighter_results_55 WHERE "opponent" = 'kendall grove'

Question: When has an Event of ufc 123?
SQL: SELECT "time" FROM fighter_results_55 WHERE "event" = 'ufc 123'