Are you a fan of the guitar? Conventionally, they have 6 strings.
Yes! I own a Yamaha guitar but it's been so difficult to self learn. Do you know when the first guitar was invented? 
I'm not so sure, but it usually has a hollow wooden or plastic casing.
Yeah, they produce such a nice sound! Do you know how many variants you can get of the guitar?
It is a type of chordophone, for what that's worth. Some have guts and can tune.
That's interesting, i didn't know that. What else can you tell me about the guitar? 
The tone is created by the vibration of the string.
Wow, those vibrations make good music! Do you know what the string can be made out of? 
Some of them are made of nylon now! Others are made of steel.