CREATE TABLE table_52252 ("Race" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT, "Constructor" TEXT, "Report" TEXT)

What was the race with nigel mansell winning in estoril?
SELECT "Race" FROM table_52252 WHERE "Race Winner" = 'nigel mansell' AND "Location" = 'estoril'
SELECT "Race" FROM "table_52252" WHERE "Location" = 'estoril' AND "Race Winner" = 'nigel mansell'