Nice success story.
'Source' was sloppy terminology. What I mean is, you have published an article by x person saying this thing, can you confirm what it refers to.
Um trying to come up with a good example. Let's say.. a regular columnist in the Lower Buntingworth Church Newsletter writes 'The Organist swore, using x words, during our recent choral concert.'
Say part of the concert was video'd and we the congregation have all seen it. The rest has been seen only by the newsletter editor. We have seen an incident that may well be the one referred to in the article, & the consensus there is that the organist has been misheard & is now being represented in the newsletter. Can you the editor confirm that the incident referred to by your columnist is the one we have seen. If it isn't, kindly ask your columnist to specify what alternative incident it was and check the footage accordingly. Either way they should be able if not willing to give a concrete answer.
Near enough if not as to particulars.