Usually if there is a black note a half step up we would say “oh it’s E#” but because there is not black note the next note we see is F.
I'm gonna go off on a limb here and say a painting. Hope that helped!
A comics even though these are old but there is some that are still being made today it gives you a visual and reading about what who where and why is happening.
F-A-B-F
The lines would be EGBDF
and the spaces will always be FACE
