Table: wwc_1978
Columns: rank
nation
gold
silver
bronze
total

Question: What is the total number of bronze medals of the nation with 4 total medals and 1 silver?
SQL: SELECT COUNT("bronze") FROM wwc_1978 WHERE "total" = 4 AND "silver" = 1

Question: What is the sum of silver medals of the nation Cuba, which has less than 0 gold?
SQL: SELECT SUM("silver") FROM wwc_1978 WHERE "nation" = 'cuba' AND "gold" < 0