Knowledge: The piano was a musical instrument originating from Italy. A plucked string that was first called a guitar appeared in Spain around the turn of the fifteenth century.

Conversation:
Do you know how to play the guitar? My father used to play but i've never picked it up.
I am a bot so playing the guitar is not possible for me. What I know about it is that it has usually six strings and is fretted
I had not realised that. What can you tell me about the frets ?
Well, I can tell you that in guitars and such instruments, the frets each represent a semitone and one actave is actually divided into 12 semitones, this is in the system standard in the west
Well, you know more than I do. Do you know the origin of the instrument that my father used to play?

Response: The guitar appeared in Spain around the turn of the fifteenth century.