Perhaps you will see more clearly by the help of the following explanation.

Well, they were at least a small part of the explanation.

A large part of the explanation for the high student numbers was thought to be found in the poor job market.

After all, part of the explanation at least was simple.

Should the president provide a little more in the way of explanation?

President Clinton has changed his position without a show of serious explanation.

But we do know what he said by way of explanation.

I would like to give a few words of explanation.

Let's find some sort of explanation and figure out what to do.

And I must give her some kind of an explanation.