Those are very useful pieces of information to then decide the next step.

A useful piece of data, although purchased at far too dear a cost.

As a holiday gift, I give you three particularly useful recent pieces on immigration.

A vice is a useful but not essential piece of equipment.

Two useful pieces of information that everybody knows but nobody brings up: 1.

Now she is doing a remarkably useful piece of Christian service.

A useful piece of advice I'd do well to remember.

Your personal skills will ensure that we are able to undertake a useful piece of work.

His most useful piece of advice concerned what to draw or paint.

That was a useful piece of technology they had acquired.