Rinoa isn't 1 though She's a character in ff8, not a number.
But, mathematically,
It could be:

if R thenU; ifU then S; since R, then S. Yay law of syllogism.

or something like:
If Rinoa is going to be interesting in FF8, then she is Ultimecia.
Rinoa is interesting in FF8, thus Rinoa is Ultimecia.

I can't remember what the second one is called though, maybe XoXyunalescaXoX does, because she seems to be learning it now