Entering new anime titles

[Arigatomina]

There are a number of YYH ovas, all referred to as Eizou Hakusho. I've seen three listed on official anime websites so far, and each seems to have a 'subname', so my question is how would I enter the titles into the database? Take "Eizou Hakusho: Dark Tournament" - where in that would I add Yu Yu Hakusho so it's placed next to the series? Or would it not have YYH listed in the title at all? And would there be (OVA) at the end of the title - "Eizou Hakusho: Dark Tournament (OVA)"? Some of the other ovas are placed under the Eizou Hakusho listing - the Yume Yume Hakusho minis. Would those be listed separate as "Eizou Hakusho: Yume Yume Hakusho (OVA)" or placed under a generic "Eizou Hakusho (OVA)" title with the official ovas for each of the four main characters? I've thought about using a single "Eizou Hakusho (OVA)" listing for *all* the ovas, but that won't tell which ova is being used in the video.

So, should I list the ovas seperately according to the titles on the dvds, or lump them together? And where (if at all) in the title would the "Yu Yu Hakusho" go?