What are those unwritten endings? I do get that they are optional indefinite articles but it seems to add them to names as well. It sounds like "Samia-ti" instead of Samia. Also, do we add the articles to all but the last predicate? Like, why is it "Sāmiati duktūratun mumtāza" instead of "mumtāzatun" ?
It is related to nominatives and accusatives, I believe it might be explained with time. You shouldn't worry about it too much, it's not very complicated.
Edit: Moreover, most people and even the media forsake these suffixes.