The concept you need to define is FAMILY. You have to give a sensible definition not a cliche. It has to be written like a dialogue between you and Socrates talking about the definition. Take into consideration how your definition applies to medical proxies, to last wills and testaments, to adoption possibilities, to legal guardianship, to questions of incest, to financial obligations, etc. At the end you have to have a definition that is foolproof and he cant find problems or contradictions with it. There is a specific template you have to follow that I attached below along with the instruction for the paper. I also attached an example paper of how it has to be.