How to search in Mongo by key and value throughout the document?

Question

NoSQL

Good afternoon.
It is necessary to find all the people who graduated from, for example, institute 567.
The problem is that we cannot accurately specify the parent elements for this institute (and are at different levels).
For example, in professions.actor. theater.drama and professions.actor. stuntman is institute

{
    "_id": ObjectId("56ff619b14989a0ed0316921"),
    "firstName": "Иван",
    "lastName": "Лабанов",
    "professions": {
        "actor": {
            "film": {
                "drama": {
                    "institute": 567
                },
            },
            "theatre": {
                "drama": {
                    "institute": 123,
                },
            },
            "stuntman": {
                "institute": 321,
            }
        },
    }
}, {
    "_id": ObjectId("56fe77b114989a05577e9f22"),
    "firstName": "Петр",
    "lastName": "Смирнов",
    "professions": {
        "actor": {
            "film": {
                "comedy": {
                    "institute": 567,
                }
            },
        }
    }
}, {
    "_id": ObjectId("56fe77b114989a05577e9f11"),
    "firstName": "Василий",
    "lastName": "Иванов",
    "professions": {
        "actor": {
            "film": {
                "comedy": {
                    "institute": 123,
                }
            },
        }
    }
}

Answer 1

No way.
You have a strange database structure.
Is it the same person who studied to be a theater comedian and a movie comedian?

Answer 2

this is what happens when they try to cram relational data into a non-relational unstructured database ...
relational easily solves this problem.