CREATE TABLE table_63440 ("Rank" FLOAT, "Rowers" CLOB, "Country" CLOB, "Time" CLOB, "Notes" CLOB)

Who are the rowers from the United States?
SELECT "Rowers" FROM table_63440 WHERE "Country" = 'united states'
SELECT "Rowers" FROM "table_63440" WHERE "Country" = 'united states'