CREATE TABLE table_50223 ("Department" TEXT, "Micro  ( 10ha ) " FLOAT, "Small  ( 100ha ) " FLOAT, "Medium  ( 500ha ) " FLOAT, "Big  ( >500ha ) " FLOAT, "Total" FLOAT)

Which Big (>500ha) has a Micro (10ha) larger than 940, and a Department of potos , and a Total smaller than 16,240?
SELECT MAX("Big (>500ha)") FROM table_50223 WHERE "Micro (10ha)" > '940' AND "Department" = 'potosí' AND "Total" < '16,240'
SELECT MAX("Big (>500ha)") FROM "table_50223" WHERE "Department" = 'potosí' AND "Micro (10ha)" > '940' AND "Total" < '16,240'