Complex sentence: Journalist Wolfe Kaufman claims that he coined the word "whodunit" around 1935 while working for "Variety" magazine, however, an editor of the magazine, Abel Green, attributed it to his predecessor, Sime Silverman.
Split into simpler sentences: Journalist Wolfe Kaufman claims that he coined the word "whodunit" around 1935 while working for "Variety" magazine. However, an editor of the magazine, Abel Green, attributed it to his predecessor, Sime Silverman.