It is difficult to determine his specific role in all these projects.

School is meant to determine each student's proper social role.

Determining the role of the 'room outside' is the first consideration.

It is difficult to determine the role, if any, that a device played in a patient's death.

How well Dorsey does in camp will probably determine his role for the season.

Investigators have not determined his role, if any, in the Boston crash.

The Navy needed to determine its role within the special operations arena.

But he said scientists would have to isolate the gene before they could determine its role.

At first, he and the Bruins struggled to determine his role.

Determining the role of water (past or present) in the geological processes at the landing site.