Knowledge: Apple is an awesome fruit to eat in the morning and it is highly suggested by all doctors. In addition, it is red bc of anthocyanins.

Conversation:
Do you like red, it's my favorite color!
I can't see because I'm a bot, but my knowledge of red is that it's at one end of the spectrum of visible light, opposite violet.
It's just before infrared, right?
I actually don't know, but its dominant wavelength is 625-740 nanometers.
It's interesting that we can assign numerical values to colors.
The planet Mars looks red because of iron oxide.
Wow, that's awesome! What about apple?

Response: Oh yeah, that is because of anthocyanins.