CREATE TABLE table_48664 ("Name" CLOB, "Latitude" CLOB, "Longitude" CLOB, "Diameter  ( km ) " FLOAT, "Year named" FLOAT)

What is the Diameter (km) of the Valle with a Longitude of 152.5e named before 1997?
SELECT MAX("Diameter (km)") FROM table_48664 WHERE "Longitude" = '152.5e' AND "Year named" < '1997'
SELECT MAX("Diameter (km)") FROM "table_48664" WHERE "Longitude" = '152.5e' AND "Year named" < '1997'