1. The words used are _ati_, who; _taa, tafa_, what. The personal
article _a_ makes _ati_ who, singular, _gerati_ plural. Both _ti_
and _taa_ are nouns. The adverb _ba_ may be added to _ati_ for the
purpose of emphasis: _ati ba_ who? _Ti_ stands for the name of the
person and _ati_ means, what is the name? _ati mwane_ what man? The
demonstrative _ne_ may be added for emphasis: _ati ne_ who is it
then? _Ati_ has also an indefinite use: _ati susulia_ who knows?
2. With _taa_, _tafa_, the definite article _si_ may be used: _si
taa_ what, that which, _taa_ may follow the noun, _ta si doo taa_
what sort of thing? _si doo taa ne_ what? The adverb _fai_ (where)
may be used as an interrogative pronoun: _nifai_ which, what?