CREATE TABLE table_79849 ("Rider" TEXT, "Date" TEXT, "Place" TEXT, "Race" TEXT, "Event" TEXT, "Machine" TEXT)

What machine did Keith T. Gawler ride?
SELECT "Machine" FROM table_79849 WHERE "Rider" = 'keith t. gawler'
SELECT "Machine" FROM "table_79849" WHERE "Rider" = 'keith t. gawler'