Table: swimming_2007_world_champs
Columns: heat_rank
lane
swimmer
country
time
overall_rank

Question: For how long did Bolivia have a lane greater than 6?
SQL: SELECT COUNT("time") FROM swimming_2007_world_champs WHERE "country" = 'bolivia' AND "lane" > 6

Question: In heat rank 7, what is the sum of lanes?
SQL: SELECT SUM("lane") FROM swimming_2007_world_champs WHERE "heat_rank" = 7

Question: Which country is ranked 56 overall and has a heat rank smaller than 8?
SQL: SELECT "country" FROM swimming_2007_world_champs WHERE "heat_rank" < 8 AND "overall_rank" = '56'

Question: What is the greatest lane with an overall rank of 79 and a time larger than 26.1?
SQL: SELECT MAX("lane") FROM swimming_2007_world_champs WHERE "overall_rank" = '79' AND "time" > 26.1