"There are keys on the table"
Translation:Pana funguo mezani
Ina means "it has" ... the subject being something of class 9.
Zina means "they have" ... the subject being something of class 10.
Pana essentially means "the specific place has". It uses the prefix of class 16, which is one of the three locative classes. It's an existential/locative because you are saying that a specific location is the possessor. Using ina or zina just mean that (a) thing(s) are/is the possessor.