title: Family tree in Python
body: <p>I need to model a four generational family tree starting with a couple. After that if I input a name of a person and a relation like 'brother' or 'sister' or 'parent' my code should output the person's brothers or sisters or parents. I have a fair bit of knowledge of python and self taught in DSA. I think I should model the data as a dictionary and code for a tree DS with two root nodes(i.e, the first couple). But I am not sure how to start. I just need to know how to start modelling the family tree and the direction of how to proceed to code. Thank you in advance! </p>