<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["es", "en"].<end_of_turn>
<start_of_turn>user
¿Cuándo se utiliza "quién" frente a "eso" en cláusulas relativas?<end_of_turn>
<start_of_turn>model
"Who" and "that" are both relative pronouns used to introduce relative clauses, but they are used in different contexts:

Who: The pronoun "who" is used when referring to people. It is used to introduce a relative clause that provides more information about a person or group of people. For example, "She is the doctor who helped me."

That: The pronoun "that" is used for both people and things, although its use for people is more common in American English than in British English. "That" is often used in defining clauses (clauses essential to the meaning of the sentence). For example, "She read the book that was on the table." or "He is the one that called yesterday."

In summary, "who" is specifically for human subjects, while "that" can be used for both people and things, particularly in defining clauses. The choice between them can sometimes depend on the formality of the context (with "who" being more formal) and regional variations in English usage.<end_of_turn><eos>