How would you teach someone about human relationships like male female, intersex, father mother daughter son sibling wife husband grandfather grandmother uncle aunt etc and family trees and possibly how to research your own :-) the nature of relations ships like the brother of a brother or sibling is a brother (mathematical nature of relationships)
half-siblings?
how this can be vectorized?   king - man + woman = queen ? etc :-)
the notion of name and role in languages enabling explanation and reasoning in language :-)
many ideas to be broken down into simpler ones :-)
Teaching someone about human relationships can be done in several stages.

Start with the basic concepts: Explain the different gender identities such as male, female, and intersex, and the various family relationships like father, mother, daughter, son, sibling, wife, husband, grandfather, grandmother, uncle, aunt, etc.

Family Trees: Explain the concept of a family tree and how it represents the relationships between family members. Discuss how it can be used to research one's own family history.

Mathematical Nature of Relationships: Explain the mathematical nature of relationships, such as the relationship between siblings, half-siblings, and the brother of a brother is a brother.

Vectorizing Relationships: Discuss the concept of vectorizing relationships and the use of mathematical operations, such as king - man + woman = queen, to represent relationships.

The Notion of Name and Role in Languages: Explain the importance of names and roles in language, and how they enable explanation and reasoning in language.

Breaking Down Complex Concepts: Emphasize the importance of breaking down complex concepts into simpler ones, to make them easier to understand.

It is important to use real-life examples and visual aids, such as family tree diagrams, to help illustrate these concepts. Encourage the student to ask questions and actively participate in discussions to ensure they have a deep understanding of these concepts.
Walk through the process you use for breaking down complex concepts.
Concepts become more complex the more it is distinguished from something else.
 For example: Family, is the most basic concept of People related to you. and a Family Tree is a great visual aid to show how each person fits into certain roles correspondent to the subject. (i.e. Father, Mother, Brother, Sister etc.)
From here you can further distinguish (Break Down), the separate parts of what makes a family, Starting with factors that make the greatest distinctions such as gender. In this way you can now distinguish and define the males (Grandfather, Father, Uncle, Brother, Son). From the females (Grandmother, Mother, Aunt, Sister, Daughter). With this information in mind, it becomes much easier to define the complex concept of a Cousin, which is a gender neutral role within a family.