Table: rummolo_2000
Columns: heat
lane
name
nationality
time

Question: What is the heat number of the athlete who finished in 2:23.95?
SQL: SELECT AVG("heat") FROM rummolo_2000 WHERE "time" = '2:23.95'

Question: Which lane did the athlete from Zambia swim in?
SQL: SELECT "lane" FROM rummolo_2000 WHERE "nationality" = 'zambia'