The correct answer to this open question is the following.
Although there are no options attached, we can comment on the following.
The kind of testimony their claim represents is a general statement without any evidence to prove it. It is not a claim of fact because it does not present any evidence. It is neither a claim of policy. We could say that it could be a claim of value, but it doesn't say if this is good or bad.
So it is important to include some type of evidence to back our affirmations. Without the proper evidence, then it is their opinions against ours.
So it is hard to believe that hunters Harlen E. Ford and Billy Mills have seen Bigfoot at one time if they don't provide proper evidence.