>>1065
I've been reading up, and I got my terminology wrong. ke'a is a resumptive pronoun.
Who went to the store?
"Who" is an interrogative.
Lojban: ma pu klama le zarci
I like the man that went to the store.
"that" is a complementizer: it introduces a relative clause but provides no information about the relationship to the antecedent.
Lojban: mi nelci le nanmu poi pu klama le zarci
I like the man who went to the store.
"who" is a relative pronoun, which introduces a relative clause in which the antecedent is the subject. Some languages do not use the same words for interrogatives and relative pronouns, and relative pronouns are not common outside of European languages.
Lojban: no relative pronouns
I like the man that he went to the store.
"that" is a complementizer and "he" is a resumptive pronoun (quite a few languages do this instead of leaving a gap like English does).
Lojban: mi nelci le nanmu poi ke'a pu klama le zarci
In theory, you could say something like "mi nelci le nanmu poi ke'a e lo ke'a speni pu klama le zarci", "I like the man who he and his wife went to the market."
I know who went to the store.
"who" is a relative pronoun again, but the relative clause has no antecedent and instead acts as a noun clause.
Lojban: mi djuno lo du'u ma kau pu klama le zarci
You could also say "I know he went to the store." (as opposed to someone else) as "mi djuno lo du'u ko'a kau pu klama le zarci", or "I know he went to the store" as "mi djuno lo du'u ko'a pu kau klama le zarci". So "indirect question" is a really lousy name for "kau". Maybe "sentential focus marker", "selju'a cmavo".
So, I think "ko'a citka ma kau" would translate to "Who she eats.", so "za'a ko'a citka ma kau" would mean "I observe the identity of the one she eats.", as opposed to "ko'a citka zo'e za'a", "I observe the one she eats.".
"mi zgana lo nu ko'a citka ma kau" would be better as "mi zgana lo du'u ko'a citka ma kau", "I observe a fact of who she eats.", rather than "I observe an event of who she eats."
Now I just have to figure out ce'u.