For example:
A: Is this a city in Ukraine?
B: Yes, it is.
A: Are there mountains?
B: No, there aren’t.
A: Is there a sea?
B: Yes, there is.
A: Can the ships leave the seaport there?
B: Yes, they can.
A: Do the most of the restaurants there have a seafood menu?
B: Yes, they do.
A: Is this Odessa?
B: Yes, it is.