mongodb multilevel lookup -- 2

Query with multilevel query joining three collections, see example from the actual query in the following link:

https://docs.google.com/document/d/e/2PACX-1vSbBWobesMR6HUaB8Pqjx8ILVDHPTmNDOvmuhKyUYjTDd6Kx7AaaZVc5RpTNeq6JIJMwkheTA5VFAul/pub

The results must be presented in mongodb query format like the ones in the example.