`  :We really don't. 1 and 5 are materially wrong.  2, 3, and 4 all say the same thing, just in different ways or with more detail. Any of them are good.  Personally, I think the phrasing of 3 is a bit odd, at least when read in isolation and not also reading the current footnote. I'm therefore going to change the lead to #4 (with no objection if someone wants to change it to 2 or 3).  `