CREATE TABLE table_7205 ("Rank" FLOAT, "Name" TEXT, "Span metres" FLOAT, "Span feet" FLOAT, "Material" TEXT, "Year opened" FLOAT, "Location" TEXT, "Country" TEXT)

What is the sum of Year opened when the span feet is more than 1247, and the spam metres is 384?
SELECT SUM("Year opened") FROM table_7205 WHERE "Span feet" > '1247' AND "Span metres" = '384'
SELECT SUM("Year opened") FROM "table_7205" WHERE "Span feet" > '1247' AND "Span metres" = '384'