what type of sentence is this, their Fourth of July barbecue was ruined when a tropical storm hit their city and the rain drowned the grill

Something you may do if the weather's nice on sunday. -something you might not want to do this evening. -something you could go on aaturday evening. -something you could wear to a party. -somebody you might see in the next couple of days. -a subject you could study at college or university. -somewhere you might go on holiday .