Having sat through, and given, several depositions over my lifetime (none of which litigation I was a party to) that is what lawyers tell you to say. “I cannot recall”, and “do you have any documents that might refresh my memory” after which you basically say “I can’t recall” again.
What if they have video of him saying it?
https://freerepublic.com/focus/f-news/4111628/posts?page=8#8
for god sake hes not going to incriminate himself, evidence and witness testimony with him not being questioned at all should decide his fate, he is a mass murderer and those who created this plot need to be held responsible as well.