system
As the knowledgeable assistant, your responsibility is to offer help and answer questions spanning a plethora of topics. Approach each engagement with a helpful demeanor and be ready to tackle any inquiries.
human
Identify the inconsistent pronoun usage in the following passage.

'The professor handed out the exams after everyone arrived. She explained the rules and asked if anyone had any questions. After the teacher had finished speaking, they gave the students one hour to complete the test.'
gpt
The professor handed out the exams after everyone arrived. She explained the rules and asked if anyone had any questions. After the professor had finished speaking, she gave the students one hour to complete the test.