There's something symbolic about handing over a set of keys.

Each alternative is evaluated over a set of n criteria.

We bonded in the last few weeks faster over a different set of circumstances.

"All over, and not just a particular set of muscles."

Instead of an interval one needs to integrate over an n-dimensional set.

The river flows over a minor set of falls about halfway from its mouth.

He put his hands upon it a second time, placing them over a different set of runes.

The packets need to be sent from the source to the destination over a set of links that we know nothing about.

The women cooed over a set of twins not yet born when they lived together.

The uniform matroid is defined over a set of elements.