Question: What is the highest silver rank with a total of 27?
SQL: SELECT MAX("Silver") FROM "2-15367515-1" WHERE "Total" = 27.0;

Question: What is the total number of Silver when Bronze was smaller than 1 with a total smaller than 2 in bulgaria?
SQL: SELECT COUNT("Silver") FROM "2-15367515-1" WHERE "Bronze" < 1.0 AND "Total" < 2.0 AND "Nation" = 'bulgaria';