2. The Article in Kongo gives more or less of definiteness to its Noun; it indicates that it has previously been spoken of, or it is a case in point, or in some way well known ; but when the Article is absent, and there is no rule to cause such absence, its absence specially marks the indefiniteness of the Noun ; in such case, in English we might use some. ..or other, any, one of.... This is specially the case after ovo, if, and in negative clauses generally. There are other rules for the presence or absence of the Article to be noted further on.