CREATE TABLE table_22496 ("Athlete" CLOB, "Class" CLOB, "Event" CLOB, "Round of 64" CLOB, "Round of 32" CLOB, "Round of 16" CLOB, "Quarterfinals" CLOB, "Semifinals" CLOB, "Final/ Bronze medal match" CLOB)

When bas van erp was the athlete what was the quarterfinals?
SELECT "Quarterfinals" FROM table_22496 WHERE "Athlete" = 'Bas van Erp'
SELECT "Quarterfinals" FROM "table_22496" WHERE "Athlete" = 'Bas van Erp'