We want you to obtain proof that a murder was committed.

But it has not been able to obtain enough proof to bring any charges, people close to the inquiry say.

I have told you that obtaining proof against him might take months, even years.

I have obtained proof of it by listening to her conversation with the cardinal.

The only thing to do was obtain proof.

The one problem I am faced with is obtaining proof.

I have obtained direct proof that the prairies of the West rest upon polished rock.

Is it possible that he actually obtained proof of our plans?

But then, obtaining such proof has been our problem all along.

But whether or not I manage to obtain final proof against either man, it scarcely matters.