Is it possible to make a collections under the another collection?

Hi, i’ve got a question about content organization in strapi. how can I create a type with metro station collections under the city collections? In different cities, the names of metro stations are the same and I want that when choosing a city in the related card, you can only select the metro that is located in the specified city.
I did not find such functionality in the documentation, the question is - is it possible to implement it?