She has foam letters that she plays with in the tub, so when she asked me to hand her one I decided to turn bath time into lesson time. Here's how the conversation went:
Ophelia: I need the purple one.
Me: This one?
Ophelia: Yeah.
Me: You know what this is?
Ophelia: Yeah.
Me: What is it?
Ophelia: I don't know.
Me: It's a letter.
Ophelia: Yeah.
Me: Do you know which letter it is?
Ophelia: Yeah.
Me: Which letter is it?
Ophelia: The purple one.