Conversation 1:
Ms. Black: What's that in your hand, Mike?
Mike: It's a pen.
Ms. Black: Can you spell it, please?
Mike: Yes. P-E-N, pen.
Conversation 2:
Ms. Black: What's this, Jack?
Jack: It's a ruler.
Ms. Black: Spell it, please.
Jack: Sorry, I don't know, Ms. Black.