Other studies have found that doctors fail to identify depression in their patients 40 to 60 percent of the time.

We failed to identify a source of bleeding in 40 patients.

The plane approached again at 09:45 and once more failed to identify itself.

All three airport employees failed to identify what they saw.

But if she failed to identify him, slavery would continue.

Each follows only one line among many ancestors and thus can fail to identify others.

In July 1940, two ships entered the area and failed to identify themselves.

The county sheriff's department tried but failed to identify the blog's real author.

Once again, the phone company failed to identify the location of the caller.

But a new report by the labor organization failed to identify a single nation that had responded to its call with any concrete action.