hitori no teeburu wa arimasu ka
which is rendered in the Interlingua as
POLITE REQUEST TABLE 1 PERSON
Though it is nice that this goes all the way through: I can get the Interlingua as a prompt, speak the sentence, and be informed that I got it right. Not surprisingly, since the grammar doesn't cover anything else, it's very reliable when you say the one thing it knows!
Yukie and I need to get together and add more content. The first step will be for Yukie to flesh out the corpus, which currently only has a dozen or so examples.