Fill in the blank (_) in the following sentence from the following choices.
Sentence: Samuel wants to buy a good cutting board and asks for Robert's advice, because _ is a chef.

Choice 1: Samuel wants to buy a good cutting board and asks for Robert's advice, because Samuel is a chef.
Choice 2: Samuel wants to buy a good cutting board and asks for Robert's advice, because Robert is a chef.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.