How to feed literal data to a neural network?

Question

Neural networks

Good afternoon!
It is necessary to submit the names of cities to the input neurons of the ANN (GRNN).
How to do this, because you can’t just tell the id of this city, or its name.
Thanks in advance.

Answer 1

And why it is impossible to transfer ID? If there are many cities, then it is hard to believe that the neural one will work well.