CREATE TABLE table_8542 ("Tournament" CLOB, "Surface" CLOB, "Week" CLOB, "Winner and score" CLOB, "Finalist" CLOB, "Semifinalists" CLOB)

Which Surface has a Week of march 1?
SELECT "Surface" FROM table_8542 WHERE "Week" = 'march 1'
SELECT "Surface" FROM "table_8542" WHERE "Week" = 'march 1'