He was smiling, as if they represented a challenge to him.

"New York can represent significant challenges from a life style point of view," he said.

This seemed to represent a challenge, so here is the schedule for a first season.

That being the case, the issue of employment represents a major challenge.

This is the way to gain access to the rest of the school building, each room representing a different challenge or level.

"Plans" also represents a challenge for the mainstream music industry.

Yet each represents a major challenge to the publishers' traditional business model.

This represents an unprecedented challenge on the political, economic and social levels.

It represents a significant challenge to the present single currency system.

Turning around the situation in Afghanistan represents a major challenge.