In any month with a Friday the Thirteenth, what day of the week is the first day of the same month?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
In any month with a Friday the Thirteenth, what day of the week is the first day of the same month?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\text{Sunday}
In any month with a Friday the Thirteenth, what day of the week is the first day of the same month?
train