Over and there are both adverbs. Individually they mean: over: on the other side of an intervening space. there: in or at a place other than that of the speaker.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
over: on the other side of an intervening space.I think in your example there is some ellipsis: That is th
there: in or at a place other than that of the speaker.
---Webster's Third New International Dictionary