I think the issue really isn't with the "xu", but the fact that NA is scoped over the whole bridi
I think, here, function of {na} is very simple. Let's suppose, the "previous" sentence is {.i ta mlatu xu}. Then {go'i} = {ta mlatu} = "that's true" {na go'i} = {ta na mlatu} = {na ku ta mlatu} = "that's false"
But that's not the point. More important is that {ta mlatu xu} does not contain a claim. The questioner usually doesn't even know whether that is a cat or not. Now does {do jinvi lo du'u ta mlatu xu ku ta} contain a claim? Does it say that you indeed have some opinion about that object?
--
You received this message because you are subscribed to the Google Groups "Lojban Beginners" group.
To view this discussion on the web visit https://groups.google.com/d/msg/lojban-beginners/-/cOyyk5RK1FsJ.
To post to this group, send email to lojban-beginners@googlegroups.com.
To unsubscribe from this group, send email to lojban-beginners+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/lojban-beginners?hl=en.