Question: What is the nationality of Louise Glück and Elswyth Thane?

Context paragraphs:
Elswyth Thane: Helen Elswyth Thane Ricker Beebe (May 16, 1900 – July 31, 1984) was an American romance novelist.  Born in Burlington, Iowa, she was the daughter of a local teacher and high school principal.  The family moved to New York City in 1918, and "Helen Ricker" changed her name to "Elswyth Thane".  She began working as a freelance writer in the 20s, and became a newspaper writer and a Hollywood screenwriter.  Her first novel, "Riders of the Wind", was published in 1926.  Her novel, "The Tudor Wench", about Elizabeth I of England, was made into a play.  She was a collector of scarves.

Meadowlands (book): Meadowlands is a 1997 poetry book by Louise Glück.  It is her tenth book.

Averno (poetry): Averno is Louise Glück's eleventh collection of poetry published in 2006 by Farrar, Straus and Giroux.  It was a National Book Award Finalist for Poetry that year.

Tryst (novel): Tryst, written in 1939 by Elswyth Thane, is a story of two people and a seemingly ordinary home.  While a quick summary may make it sound like a Horror novel, it actually borders on Mystery and Romance.

Amanda Thane: Amanda Louise Thane {'1': ", '2': ", '3': ", '4': "} (18 December 1953 – 1 September 2012) was an Australian operatic soprano known for her interpretations of roles such as Violetta in Verdi's "La traviata", Liù in Puccini's "Turandot", Eva in Wagner's "Die Meistersinger", and the title role in Donizetti's "Maria Stuarda".  She sang at the Royal Opera House, Covent Garden, from 1991 to 2000, including leading roles in "Les Huguenots", "The Tales of Hoffmann" and "La bohème".

Symphony No. 5 (Harbison): The Symphony No. 5 is a composition for baritone, mezzo-soprano, and orchestra by the American composer John Harbison.  The work was commissioned by the Boston Symphony Orchestra under the conductor James Levine.  It was given its world premiere in Boston on April 17, 2008 by the mezzo-soprano Kate Lindsey, the baritone Nathan Gunn, and the Boston Symphony Orchestra directed by James Levine.  The text of the piece is set to "Orpheus and Eurydice" by Czesław Miłosz, "Relic" by Louise Glück, and the "Sonnets to Orpheus" by Rainer Maria Rilke.

Louise Glück: Louise Elisabeth Glück (born April 22, 1943) is an American poet.  She was appointed Poet Laureate Consultant in Poetry to the Library of Congress in 2003, after serving as a Special Bicentennial Consultant three years prior in 2000.  She won the National Book Award for Poetry in 2014 for "Faithful and Virtuous Night".

The Best American Poetry 1993: The Best American Poetry 1993, a volume in "The Best American Poetry series", was edited by David Lehman and by guest editor Louise Glück.

Poetry Society of America: The Poetry Society of America is a literary organization founded in 1910 by poets, editors, and artists including Witter Bynner.  It is the oldest poetry organization in the United States.  Past members of the society have included such renowned writers as Robert Frost, Langston Hughes, Edna St. Vincent Millay, Marianne Moore, and Wallace Stevens.  Current members include John Ashbery, Louise Glück, Rita Dove, Stanley Kunitz, Robert Pinsky, Molly Peacock, Billy Collins and James Tate.

The Wild Iris: The Wild Iris is a 1992 poetry book by Louise Glück, for which she received the Pulitzer Prize in 1993.  The book also received the National Book Critics Award for Poetry and the Poetry Society of America's Melville Kane Award.

Supporting paragraphs: Louise Glück Elswyth Thane
Answer: American