CREATE TABLE table_1786 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Game site" CLOB, "Record" CLOB, "Attendance" FLOAT)

Where was the game where attendance was 51478?
SELECT "Game site" FROM table_1786 WHERE "Attendance" = '51478'
SELECT "Game site" FROM "table_1786" WHERE "Attendance" = '51478'