"Who am I?

I am one of the human beings on Earth

I am my father's daughter

I am my mother's daughter

I am my elder sister's younger sister

I am my younger sister's elder sister

I am a student in the university

I am my teacher's student

I am a friend of my friend

I am also a friend of my friend's friend

But a total stranger I am to another total

"Who am I?"

To answer that question,

Let's see who to me you are."