CREATE TABLE table_204_535 (id NUMBER, "pos" CLOB, "rider" CLOB, "manufacturer" CLOB, "laps" NUMBER, "time/retired" CLOB, "grid" NUMBER, "points" NUMBER)

which is the only rider with number 6 grid on the chart
SELECT "rider" FROM table_204_535 WHERE "grid" = 6
SELECT "rider" FROM "table_204_535" WHERE "grid" = 6