They did not say what kind of favors were involved.

The article did not say precisely what kind of technology was involved.

"Anything we sent to them involved some kind of trauma," he said.

I cannot agree with the previous speaker that some kind of force is involved here.

Though their conversations had been far from normal, at least they'd involved some kind of social interaction.

"At this point, we cannot reveal what kind of aircraft will be involved."

Students were shown family trees and asked to figure out what kind of inheritance pattern was involved.

If some kind of energy is involved, where does this energy come from?

Perhaps they involve some kind of delayed reaction to 1986 tax changes.