Table: olympic_canoing_c2_1000m
Columns: rank
athletes
country
time
notes

Question: What is the rank for the man from China with notes of QS?
SQL: SELECT MAX("rank") FROM olympic_canoing_c2_1000m WHERE "notes" = 'qs' AND "country" = 'china'

Question: What is the rank for the competitor from Bulgaria?
SQL: SELECT MIN("rank") FROM olympic_canoing_c2_1000m WHERE "country" = 'bulgaria'

Question: Which athlete is ranked below 5 and is from China?
SQL: SELECT "athletes" FROM olympic_canoing_c2_1000m WHERE "rank" < 5 AND "country" = 'china'