Alan has a thorny task and deserves all help.

Mr. Barr has not tried to displace Mr. Sessions, a potentially thorny task.

Yet the challenge of designing ground-hugging, path-finding automated vehicles remains one of the thorniest tasks facing those who work on artificial intelligence.

That is a politically thorny task that could result in some lawmakers' losing power and others gaining it.

This we found a thorny task, but at last he was dragged forth uninjured, though in a very pious and prayerful frame of mind.

Granted, thornier tasks lie ahead.

In the last month, independent commissions, set up by Congress or at its direction, have taken care of several thorny tasks that seemed impervious to conventional politics.

Eradicating this enormous burden is another thorny task.

That done, Judge Garrity then faced the even thornier task of overseeing the steps taken to desegregate the system.

Now, lawmakers will be consumed with the thorny task of deciding where federal money for homeland security will go, as cities complain that previous promises have not been met.