Table: olympic_400m_5
Columns: rank
lane
athlete
nationality
time
react

Question: Which Athlete has a Reaction of 0.248?
SQL: SELECT "athlete" FROM olympic_400m_5 WHERE "react" = 0.248

Question: Which Rank has a Reaction of 0.198, and a Time smaller than 46.3?
SQL: SELECT MAX("rank") FROM olympic_400m_5 WHERE "react" = 0.198 AND "time" < 46.3

Question: Which Lane has a Time larger than 47.83?
SQL: SELECT AVG("lane") FROM olympic_400m_5 WHERE "time" > 47.83

Question: Which Reaction has a Rank smaller than 4, and a Nationality of trinidad and tobago, and a Time larger than 45.13?
SQL: SELECT AVG("react") FROM olympic_400m_5 WHERE "rank" < 4 AND "nationality" = 'trinidad and tobago' AND "time" > 45.13