Mary: What are you gonna do today, Nack?
Nack: I have a lesson this evening.
Mary: A lesson? Do you teach?
Nack: Yes, I do.
Mary: What lesson do you teach?
Nack: Music.
Mary: What are you gonna do today, Nack?
Nack: I have a lesson this evening.
Mary: A lesson? Do you teach?
Nack: Yes, I do.
Mary: What lesson do you teach?
Nack: Music.