Yes/No question tagging had been addressed previously in the grammar, but now it is possible to ask other kinds of questions too!
Questions in Teliya Nevashi are formed by mentioning the subject or topic first, followed by the verb and usually ending in one of the 7 interrogative words. Those words are jenos ("who"), eyos ("what"), kios ("why"), alos ("where"), lumos ("when"), weros ("how") and gedos ("which (one)").
Ya kawunar, mi dev alos? (The bathroom, 3rd_person-s is-located where?; "Where is the bathroom?")
Amá dez, mi an gedos? (Mother your, 3rd-singular is which one?; "Which one is your mother?)
Dha Sheshet, mi an jenos? (That young-woman, 3rd-sing is who?; "Who is that girl?")
Kawunar is generally the bathroom in someone's home, since it is the "bathing room". A public bathroom would be iane'ar, the "water room", or thusar, the "urination room".
I've labeled thusar as vulgar in the vocabulary document, but I don't think it is strongly vulgar. It's just not as euphemistic as iane'ar. Do the Nevashi have those kinds of taboos about bodily functions? I am not sure yet.
I noticed something about the name of the world, Ianea, recently. It is called "Ya Ianen", "The Waters" by the Nevashi who live there, and I had thought that "Ianea" was the same thing, but I think it actually means something closer to "Flow" or "Flowing".