That would be the nominative case, right?
Anyway, I haven't seen "the" in the hints on hover for other nouns. If we want to unify the criteria, we should add "the" in all other hints or delete it in "ekmek".
I think that if you want to say "elephants eat bread" it would be "filler ekmek yer" or "filler ekmek yerler". The subject indicates whether it's plural or singular, so when that is obvious, you can use 'yer' instead of 'yerler' in short sentences.