Table: mma_fight_results_29
Columns: res
record
opponent
method
event
round
time
location

Question: What is the time of ufc 154?
SQL: SELECT "time" FROM mma_fight_results_29 WHERE "event" = 'ufc 154'

Question: What is the average round of the match with kevin manderson as the opponent?
SQL: SELECT AVG("round") FROM mma_fight_results_29 WHERE "opponent" = 'kevin manderson'