Table: mma_fight_results_20
Columns: res
record
opponent
method
event
round
time
location

Question: What is the Time with a Record that is 15-7?
SQL: SELECT "time" FROM mma_fight_results_20 WHERE "record" = '15-7'

Question: What is the Event with a Time that is 3:06?
SQL: SELECT "event" FROM mma_fight_results_20 WHERE "time" = '3:06'