He tried not to think about the food's possible sources.

As it turned out, a possible source of help was not long in coming.

These are just two of the many possible light sources.

"We would like to get energy from all possible sources."

There was no sign of any possible source for whatever had killed them.

One possible source of the needed capital, he said, is the business community.

Another possible source of trouble has to do with women.

"But he might be the best possible source of advice on how to deal with them."

However, other possible sources have been put forward for the text.

Then I turned, slowly, to check for any possible light sources.