Premise: Mehta's multivolume autobiography, titled Continents of Exile , has loss as its overarching  loss of sight, of childhood, of home and country, and now--with this volume--loss of Mr. Shawn's New Yorker . The memoir takes us from the time the author was hired as a staff writer in the early '60s up to 1994, when he was terminated by the loathed Tina Brown in her vandalization of his cherished magazine.
Hypothesis: The memoir is anout how he was a writer for a magazine. 
Label: entailment