Table: swimming_2008_men_1500m
Columns: heat
lane
name
nationality
time

Question: What was Christian Kubusch's lane when the heat was more than 2 and time was DNS?
SQL: SELECT SUM("lane") FROM swimming_2008_men_1500m WHERE "time" = 'dns' AND "name" = 'christian kubusch' AND "heat" > 2

Question: What's Bulgaria's lane?
SQL: SELECT AVG("lane") FROM swimming_2008_men_1500m WHERE "nationality" = 'bulgaria'

Question: What's Great Britain's lane with a heat less than 3?
SQL: SELECT AVG("lane") FROM swimming_2008_men_1500m WHERE "nationality" = 'great britain' AND "heat" < 3

Question: What's Spain's lane with a heat less than 4?
SQL: SELECT AVG("lane") FROM swimming_2008_men_1500m WHERE "nationality" = 'spain' AND "heat" < 4

Question: What's the heat in the lane less than 3 with a time of 14:48.39?
SQL: SELECT AVG("heat") FROM swimming_2008_men_1500m WHERE "lane" < 3 AND "time" = '14:48.39'

Question: What's China's heat for Zhang Lin in a lane after 6?
SQL: SELECT SUM("heat") FROM swimming_2008_men_1500m WHERE "nationality" = 'china' AND "name" = 'zhang lin' AND "lane" > 6