Q: A.T. Charlie Johnson, nationality, United States
A: A.T. Charlie Johnson is from the United States.
Q: American Journal of Mathematics, impactFactor, "1.337"; American Journal of Mathematics, abbreviation, "Am. J. Math."
A: The American Journal of Mathematics is abbreviated to Am. J. Math. and has the impact factor of 1.337.
Q: Andra (singer), genre, Pop music; Andra (singer), associatedBand/associatedMusicalArtist, Marius Moga; Andra (singer), associatedBand/associatedMusicalArtist, Andreea Balan
A: The genre of Andra (singer) is pop music and is associated with Marius Moga and Andreea Balan.
Q: 1634: The Ram Rebellion, author, "Eric Flint, Virginia DeMarce, et al."
A:
1634: The Ram Rebellion was written by Eric Flint, Virginia DeMarce, et al.