Question: Who said what if they gave a war and nobody came?

Disambiguated questions and answers:
context: Gene Scott Keyes (born October 24, 1941) is a former Assistant Professor of World Politics, a sometime peace activist, noted cartographer, and promoter of the international second language Esperanto. He achieved considerable attention for his peace activism when his mother, Charlotte E. Keyes wrote an article for McCall's, "Suppose They Gave a War and Nobody Came" (October 1966). The title phrase, based on a quote from a Carl Sandburg poem, became part of the anti-Vietnam-War lexicon. The slogan also went on to become the basis of the film Suppose They Gave a War and Nobody Came. His cartography work has won two awards.
question: Who wrote suppose they gave a war and nobody came, in an article in 1966?
short_answers: Keyes
Charlotte E. Keyes
wikipage: Gene Keyes
context: Gene Scott Keyes (born October 24, 1941) is a former Assistant Professor of World Politics, a sometime peace activist, noted cartographer, and promoter of the international second language Esperanto. He achieved considerable attention for his peace activism when his mother, Charlotte E. Keyes wrote an article for McCall's, "Suppose They Gave a War and Nobody Came" (October 1966). The title phrase, based on a quote from a Carl Sandburg poem, became part of the anti-Vietnam-War lexicon. The slogan also went on to become the basis of the film Suppose They Gave a War and Nobody Came. His cartography work has won two awards.
question: Whose poem gave rise to the saying suppose they gave a war and nobody came?
short_answers: Carl Sandburg
Sandburg
wikipage: Gene Keyes

Long-form answers:
knowledge: content: Suppose They Gave a War and Nobody Came (also known as War Games, Old Soldiers Never) is a 1970 American drama-comedy film directed by Hy Averback, produced by Fred Engel, and starring Brian Keith, Don Ameche, Tony Curtis, Ernest Borgnine, Suzanne Pleshette, Ivan Dixon, and Pamela Britton. The plot is a mixture of comic and dramatic elements and concerns the reactions of a number of World War II veterans to the contemporary US Army.

The title is derived from an American antiwar slogan from the hippie subculture during the Vietnam War era, popularized by Charlotte E. Keyes in her 1966 article for McCall's magazine titled "Suppose They Gave a War and No One Came".
wikipage: Suppose They Gave a War and Nobody Came
content: Gene Scott Keyes (born October 24, 1941) is a former Assistant Professor of World Politics, a sometime peace activist, noted cartographer, and promoter of the international second language Esperanto. He achieved considerable attention for his peace activism when his mother, Charlotte E. Keyes wrote an article for McCall's, Suppose They Gave a War and Nobody Came (October 1966). The title phrase, based on a quote from a Carl Sandburg poem, became part of the anti-Vietnam-War lexicon.[1][2] The slogan also went on to become the basis of the film Suppose They Gave a War and Nobody Came. His cartography work has won two awards.
wikipage: Gene Keyes
long_answer: Suppose They Gave a War and Nobody Came is a 1970 American drama-comedy film directed by Hy Averback, in which the plot is a mixture of comic and dramatic elements and concerns the reactions of a number of World War II veterans to the contemporary US Army. The title for the film is derived from an American antiwar slogan from the hippie subculture during the Vietnam War era, popularized by Charlotte E. Keyes in her 1966 article for McCall's magazine titled "Suppose They Gave a War and No One Came". The title for the article came from a quote from a Carl Sandburg poem, which became part of the anti-Vietnam-War lexicon. The slogan also went on to become the basis of the film Suppose They Gave a War and Nobody Came. His cartography work has won two awards.