CREATE TABLE table_19987 ("Round" FLOAT, "Date" TEXT, "Grand Prix" TEXT, "Circuit" TEXT, "125cc winner" TEXT, "250cc winner" TEXT, "MotoGP winner" TEXT, "Report" TEXT)

What is the date for the Indianapolis circuit?
SELECT "Date" FROM table_19987 WHERE "Circuit" = 'Indianapolis'
SELECT "Date" FROM "table_19987" WHERE "Circuit" = 'Indianapolis'