CREATE TABLE "list_of_fina_diving_world_series" (
  "year" real,
  "1st_venue" text,
  "2nd_venue" text,
  "3rd_venue" text,
  "4th_venue" text,
  "5th_venue" text
);

Question: How many 5th venue cities were there when Doha was the 1st venue city?
SQL: SELECT COUNT("5th_venue") FROM "list_of_fina_diving_world_series" WHERE "1st_venue"='Doha';

Question: When Qingdao was the 1st venue city, how many 2nd venue cities were there? 
SQL: SELECT COUNT("2nd_venue") FROM "list_of_fina_diving_world_series" WHERE "1st_venue"='Qingdao';

Question: In 2010, how many 1st venue cities were there? 
SQL: SELECT COUNT("1st_venue") FROM "list_of_fina_diving_world_series" WHERE "year"=2010;

Question: When Qingdao was the 1st venue city, who was in the 2nd venue?
SQL: SELECT "2nd_venue" FROM "list_of_fina_diving_world_series" WHERE "1st_venue"='Qingdao';

Question: What city was in the 3rd venue when Mexico City was in the 2nd? 
SQL: SELECT "3rd_venue" FROM "list_of_fina_diving_world_series" WHERE "2nd_venue"='Mexico City';