Question: Which author was from Russia, Michael Crichton or Marina Tsvetaeva?

Context paragraphs:
Mirra Lokhvitskaya: Mirra Lokhvitskaya (Russian: Ми́рра Ло́хвицкая ; born Maria Alexandrovna Lokhvitskaya – Russian: Мари́я Алекса́ндровна Ло́хвицкая ; November 19, 1869 – August 27, 1905) was a Russian poet who rose to fame in the late 1890s.  In her short lifetime Lokhvitskaya published five books of poetry, the first and the last of which received the most coveted Russian literary award of the day, the Pushkin Prize.  Due to the flamboyantly erotic sensuality of her works, Lokhvitskaya was regarded as the "Russian Sappho" by her contemporaries, which did not correspond with her conservative life style of dedicated wife and mother of five sons.  Forgotten in Soviet times, in the late 20th century Lokhvitskaya's legacy was reassessed and she came to be regarded as one of the most original and influential voices of the Silver Age of Russian Poetry and the first in the line of modern Russian women poets who paved the way for Anna Akhmatova and Marina Tsvetaeva.

Marina Tsvetaeva: Marina Ivanovna Tsvetaeva (Russian: Мари́на Ива́новна Цвета́ева ; ] ; 8 October [O.S. 26 September] 1892 31 August 1941) was a Russian and Soviet poet.  Her work is considered among some of the greatest in twentieth century Russian literature.  She lived through and wrote of the Russian Revolution of 1917 and the Moscow famine that followed it.  In an attempt to save her daughter Irina from starvation, she placed her in a state orphanage in 1919, where she died of hunger.  Tsvetaeva left Russia in 1922 and lived with her family in increasing poverty in Paris, Berlin and Prague before returning to Moscow in 1939.  Her husband Sergei Efron and her daughter Ariadna Efron (Alya) were arrested on espionage charges in 1941; and her husband was executed.  Tsvetaeva committed suicide in 1941.  As a lyrical poet, her passion and daring linguistic experimentation mark her as a striking chronicler of her times and the depths of the human condition.

Claude Delay: Psychpanalyst and writer, Claude Delay (born 22 December 1934 in Neuilly-sur-Seine, is also the author of several biographies of Coco Chanel, the Russian poet Marina Tsvetaeva and the brothers Alberto and Diego Giacometti.  The granddaughter of the surgeon and politician , she is the daughter of professor Jean Delay and the sister of the novelist Florence Delay of the Académie française

Sergei Efron: Sergei Yakovlevich Efron (Russian: Серге́й Я́ковлевич Эфро́н; 8 October 1893 – 16 October 1941), nicknamed Seryozha, was a Russian poet, officer of White Army and husband of Marina Tsvetaeva.  While in emigration, he was recruited by the Soviet NKVD.  After returning to USSR from France, he was executed.

Russian literature: Russian literature refers to the literature of Russia and its émigrés and to the Russian-language literature of several independent nations once a part of what was historically Rus', the Russian Empire or the Soviet Union.  The roots of Russian literature can be traced to the Middle Ages, when epics and chronicles in Old Russian were composed.  By the Age of Enlightenment, literature had grown in importance, and from the early 1830s, Russian literature underwent an astounding golden age in poetry, prose and drama.  Romanticism permitted a flowering of poetic talent: Vasily Zhukovsky and later his protégé Alexander Pushkin came to the fore.  Prose was flourishing as well.  The first great Russian novelist was Nikolai Gogol.  Then came Ivan Turgenev, who mastered both short stories and novels.  Leo Tolstoy and Fyodor Dostoyevsky soon became internationally renowned.  In the second half of the century Anton Chekhov excelled in short stories and became a leading dramatist.  The beginning of the 20th century ranks as the Silver Age of Russian poetry.  The poets most often associated with the "Silver Age" are Konstantin Balmont, Valery Bryusov, Alexander Blok, Anna Akhmatova, Nikolay Gumilyov, Osip Mandelstam, Sergei Yesenin, Vladimir Mayakovsky, Marina Tsvetaeva and Boris Pasternak.  This era produced some first-rate novelists and short-story writers, such as Aleksandr Kuprin, Nobel Prize winner Ivan Bunin, Leonid Andreyev, Fyodor Sologub, Aleksey Remizov, Yevgeny Zamyatin, Dmitry Merezhkovsky and Andrei Bely.

Michael Crichton: John Michael Crichton ( ; October 23, 1942 – November 4, 2008) was an American best-selling author, screenwriter, film director and producer best known for his work in the science fiction, medical fiction and thriller genres.  His books have sold over 200 million copies worldwide, and many have been adapted into films.

Elena Frolova: Elena Borisovna Frolova (Russian: Елена Борисовна Фролова , born 1 October 1969 in Riga) is a Russian singer-songwriter, composer, and poet.  She is author and performer of songs based on poems by many Russian poets of twentieth century, including Marina Tsvetaeva, Sophia Parnok, Joseph Brodsky, Anna Barkova, Andrei Belyi, Varlam Shalamov, Maria Petrovykh, Veniamin Blazhenny, Bulat Okudzhava, and many others, as well as her own poetry.  Frolova is one of few performers who uses Russian folk instrument gusli and ancient harp, along with classical six-string guitar for the accompaniment.  During 25 years of work she created more than 630 songs and published more than 40 music albums.

Irina Bogacheva (singer): Irina Petrovna Bogacheva (Богачёва, Ирина Петровна, born 1939) is a Russian mezzo-soprano and a professor of singing at the St Petersburg State Conservatory.  Dmitry Shostakovich composed his cycle songs to poems of Marina Tsvetaeva for her.

Christopher Whyte (writer): Christopher Whyte ("Crìsdean MacIlleBhàin") is a Scottish poet, novelist, translator and critic.  He is a novelist in English, a poet in Scottish Gaelic, the translator into English of Marina Tsvetaeva, Pier Paolo Pasolini and Rainer Maria Rilke, and an innovative and controversial critic of Scottish and international literature.  His work in Gaelic also appears under the name Crìsdean MacIlleBhàin.

Larisa Novoseltseva: Larisa Novoseltseva (Russian: Лариса Новосельцева ) is a Russian singer-songwriter, composer, performer of Russian and Ukrainian folk songs and romances, and creator of project "Return of the Silver Age".  She is author of music and performer of songs and ballads on poems by more than forty Russian poets, mostly of the Silver Age, such as Osip Mandelstam, Nikolay Gumilev, Boris Pasternak,Marina Tsvetaeva, Maksimilian Voloshin, Konstantin Balmont, Alexander Vertinsky and many others, including Bella Akhmadulina who, according to Novoseltseva, can be viewed as the last poet of Silver Age based on her poetic language and style.  Novoseltseva created more than 300 songs and published more than 20 music albums.  She usually performs solo using guitar or piano for the accompaniment.  More recently, she frequently appears with violinist Michael Czerwinski

Supporting paragraphs: Michael Crichton Marina Tsvetaeva
Answer: Marina Ivanovna Tsvetaeva