How much these costs are is a matter of debate.

But how far he has gone is a matter of debate.

Just how many will be needed is a matter of debate.

What the word means has been a matter of debate.

It is a matter of debate where he stopped for the night.

Just how rich is now a matter of hot debate.

But just how much pain is a matter of debate.

Why the change has taken place is a matter of debate.

How well that will pay off is a matter of debate.

Whether he has done so is a matter of debate.