Table: fighter_results_18
Columns: res
record
opponent
method
event
round
time
location

Question: Which opponent has a time of 1:50?
SQL: SELECT "opponent" FROM fighter_results_18 WHERE "time" = '1:50'

Question: Which opponent has a time of 2:35?
SQL: SELECT "opponent" FROM fighter_results_18 WHERE "time" = '2:35'

Question: What is the time when the opponent is stephanie palmer?
SQL: SELECT "time" FROM fighter_results_18 WHERE "opponent" = 'stephanie palmer'