4) Grad Student question: Translate the following query into a RA, and write the original syntax tree and an optimized one (150 points). SELECT hires Hire Starty products.axod id, pxodtucts.itiles products.prise, product types.name, suppliers.name FROM products INNER JOIN product suppliers ON products.prod id -product suppluer.prod.id INNER JOIN product tyees ON product types.type id - products.type.id INNER JOIN suppliers ON product.suppliers.supp id - suppliers.supp id INNER JOIN hires ON hires.prod id- products.prod id WHERE (hires.hire end s to datel'21-JAN-13') OR hires.hire start > to datel'26-JAN-13')) GROUP BY products.prod id, products.title, products.price, product _types.name