Question: Stephen King and John W. Campbell share which nationality?

Context paragraphs:
John W. Jones House: The John W. Jones House currently stands at 1250 Davis Street, Elmira, New York, across from a historic entrance to Woodlawn Cemetery.  It is the former home of John W. Jones and current home of the John W. Jones Museum.  It stands on part of its original property, though it originally faced College Avenue.  Historically, the house was the private residence of John W. Jones and his family, but changed ownership several times since, and was used as rental property that fell into disrepair.  Condemned by the City of Elmira in 1997, Lucy Brown brought it to the public’s attention and with a group of concerned citizens, saved it from demolition.  It is now the home to the John W. Jones Museum.

John W. Campbell: John Wood Campbell Jr. (June 8, 1910 – July 11, 1971) was an American science fiction writer and editor.  As editor of "Astounding Science Fiction" (later called "Analog Science Fiction and Fact") from late 1937 until his death, he is generally credited with shaping the Golden Age of Science Fiction.

Clan Arthur: Clan Arthur or Clan MacArthur, (Scottish Gaelic: Clann Artair) is a highland Scottish clan that once held lands on the shores of Loch Awe opposite Inishail.  The clan has been described as one of the oldest clans in Argyll.  Clan Arthur and Clan Campbell share a common origin, and at one point the MacArthurs challenged the seniority of the leading Campbell family.  A branch of MacArthurs from the Isle of Skye were a sept of the MacDonalds of Sleat, and were hereditary pipers for the MacDonalds of the Isles.  In late 18th century the chief of the clan died without an heir, leaving the clan leaderless until the late 20th century.  In 2002, the first chief of Clan Arthur was recognised in about 230 years.

James Cambias: James Cambias (also as James L. Cambias) is an American science fiction and fantasy writer and tabletop game designer, whose stories have been finalists for the James Tiptree, Jr.  Award, the Locus Award, the John W. Campbell Memorial Award, and the Compton Crook Award.  Cambias was a nominee for the John W. Campbell Award for Best New Writer in 2001.

Lavie Tidhar: Lavie Tidhar (Hebrew: לביא תדהר‎ ‎ ) (born 16 November 1976) is an Israeli-born writer, working across multiple genres.  He has lived in the United Kingdom and South Africa for long periods of time, as well as Laos and Vanuatu.  As of 2013, Tidhar lives in London.  His novel "Osama" won the 2012 World Fantasy Award for Best Novel, beating Stephen King's "11/22/63" and George R. R. Martin's "A Dance with Dragons".  His novel "A Man Lies Dreaming" won the £5000 Jerwood Fiction Uncovered Prize, for Best British Fiction, in 2015.  He won the John W. Campbell Memorial Award for Best Science Fiction Novel in 2017, for "Central Station".

John W. Pope Jr. Convocation Center: The John W. Pope Jr.  Convocation Center is a multi-purpose arena in Buies Creek, North Carolina.  The arena, Gore Arena, is located on the campus of Campbell University and hosts the university's basketball, volleyball, and wrestling programs.  It is named for Gilbert Craig Gore, the late son of a Campbell alum.  The John W. Pope Jr.  Convocation Center is a part of the expansion plan of Campbell's athletic facilities, which includes a new football stadium and renovations to existing Taylor Field of the baseball program.  The John W. Pope Jr.  Convocation Center replaced Carter Gymnasium, which was the second smallest gymnasium in Division I Basketball with just 947 seats, second only to Charleston Southern's Fieldhouse which holds 750.  The John W. Pope Jr.  Convocation Center also host events such as the universities commencement ceremonies and other university related events.

A New Dawn: A New Dawn: The Don A. Stuart Stories of John W. Campbell, Jr. is an archival collection of science fiction stories by John W. Campbell, published in hardcover by NESFA Press in 2003.  The volume was compiled and edited by James A. Mann.  It includes all 16 stories published by Campbell under that pseudonym, as well as two Campbell/Stuart nonfiction pieces and an introduction by Barry Malzberg.  Gary K. Wolfe declared that "the collected Stuart stories constitute a key document in the intellectual history of SF".

Stephen King: Stephen Edwin King (born September 21, 1947) is an American author of horror, supernatural fiction, suspense, science fiction, and fantasy.  His books have sold more than 350 million copies, many of which have been adapted into feature films, miniseries, television series, and comic books.  King has published 54 novels, including seven under the pen name Richard Bachman, and six non-fiction books.  He has written nearly 200 short stories, most of which have been collected in book collections.  Many of his stories are set in his home state of Maine.  His novella "Rita Hayworth and Shawshank Redemption" was the basis for the film "The Shawshank Redemption" which is widely regarded as one of the greatest films of all time.

Unpublished and uncollected works by Stephen King: According to books by Tyson Blue ("The Unseen King"), Stephen J. Spignesi ("The Lost Work of Stephen King"), and Rocky Wood "et al." ("Stephen King: Uncollected, Unpublished"), there are numerous unpublished works by Stephen King that have come to light throughout King's career.  These allegedly include novels and short stories, most of which remain unfinished.  Most are stored among Stephen King's papers in the special collections of the Raymond H. Fogler Library at the University of Maine, some of which are freely accessible to the library's visitors.  However, others require King's permission to read.  Additionally, there are a number of uncollected short stories, published throughout King's long career in various anthologies and periodicals, that have never been published in a King collection.

John W. Campbell Award for Best New Writer: The John W. Campbell Award for Best New Writer is an American award given annually to the best new writer whose first professional work of science fiction or fantasy was published within the two previous calendar years.  The prize is named in honor of science fiction editor and writer John W. Campbell, whose science fiction writing and role as editor of "Analog Science Fiction and Fact" made him one of the most influential editors in the early history of science fiction.  The award is sponsored by Dell Magazines, which publishes "Analog".  The nomination and selection process is administered by the World Science Fiction Society (WSFS) represented by the current Worldcon committee, and the award is presented at the Hugo Award ceremony at the Worldcon, although it is not itself a Hugo Award.  All nominees receive a pin, while the winner receives a plaque.  Beginning in 2005, the award has also included a tiara; created at the behest of 2004 winner Jay Lake and 2005 winner Elizabeth Bear, the tiara is passed from each year's winner to the next.

Supporting paragraphs: Stephen King John W. Campbell
Answer: American