Canonical Web Developer (Backend) interview questions

Given a Person Class (the instance of the Person Class can be single person or a team, if it is team, then a team member will be defined as well). Then the question is that: Given a people ( a group of persons and teams, each one is the instance of the Person Class), find out all the members (direct, in direct) and and all the teams (direct or indirect) of a particular person in that group