What is the best answer for Quien es el hermano de Sabina?

You need more context to answer this question! "Quien es el hermano de Sabina?" means "Who is Sabina's brother?"

To answer, we need to know:

* Who is Sabina? Is she a real person or a character?

* Does Sabina have a brother?

For example, if Sabina is a character in a book, you would need to consult the book to find out if she has a brother and who he is.

Please provide more information so I can help you find the best answer!