CREATE TABLE table_189 ("Team" TEXT, "Head Coach" TEXT, "President" TEXT, "Home Ground" TEXT, "Location" TEXT, "Founded" FLOAT, "Website" TEXT)

The president, peter williamson, had how many home grounds?
SELECT COUNT("Home Ground") FROM table_189 WHERE "President" = 'Peter Williamson'
SELECT COUNT("Home Ground") FROM "table_189" WHERE "President" = 'Peter Williamson'