Translation:It is enough
A- is the subject prefix for animate nouns (people, animals), like "he/she". The subject prefixes for the classes are
1 (m-wa sg.) a- (also ni- and u- for 1st and 2nd person)
2 (m-wa pl.) wa- (also tu- and m- for 1st and 2nd person)
3 (m-mi sg.) u-
4 (m-mi pl.) i-
5. (ma sg.) li-
6. (ma pl.) ya-
7. (ki-vi sg.) ki-
8. (ki-vi pl.) vi-
9. (N sg.) i-
10. (N pl.) zi-
11/14. (U) u-
So, basically "it" could be any of the singular ones: u- li- ki- i- u-, but as juryrigging said, I think the N class is kind of a default ... probably because it's the biggest class in terms of the number of words. A lot of non-native users of Swahili use the N class concords for anything inanimate, for example kiswahili yako ni nzuri instead of the standard kiswahili chako ni kizuri.
Thanks for that explanation. i just found your answer now. You made up my day ;D
Not sure, however my rule of thumb is "if there's no context clue, default to N/N", which seems to work here.