I do not know who has given him such accurate information.

You are right to point out the need for accurate information.

Much of the time, it is hard to tell who has the more accurate information.

We make every effort to provide complete and accurate information.

"To do that they need the most accurate information available."

The old man was the first person he had seen in Texas, and perhaps would be a source of accurate information about the road.

Every effort is made to provide complete and accurate information.

Every effort has been made to provide accurate and complete information.

Effort has been made to provide accurate and complete information.

I am sure that then we will have more accurate information.