The issue was: can a movie, so much a collective effort, ever truly be one author's work?

"Maybe one thing they learned tonight is it's going to have to be a collective effort."

On Friday, 19 nations agreed to make a collective effort to find an answer.

Terrorism is difficult enough, and despite our collective efforts, an attack may well get through.

Support participants in their individual and collective efforts to effect positive change.

The new house was a collective effort in many ways.

"It was a collective effort by so many people to get this thing done."

She said the campaign, still taking form, will be a collective effort, not her show.

It was a collective effort that left no room for doubt.

By the start of the 1990s, a collective effort began to build a replacement.