sentence: chop up the parsley sentence: add the beef parsley and bread crumbs to a bowl sentence: grate parmesan into the bowl sentence: add an egg  and mix sentence: add more breadcrumbs sentence: roll the meat into balls sentence: pour tomato sauce into a pot with oil and garlic sentence: when the sauce boils add the meatballs sentence: cook the pasta in boiling water sentence: combine the spaghetti and meatballs in a bowl sentence: grate parmesan cheese on top