Question: Are the Manon Lescaut, a four act opera composed between 1890 and 1893 and Rusalka, one of the most successful Czech operas both by Antonín Dvořák?

Context paragraphs:
Adolf Čech: Adolf Čech (11 December 184127 December 1903) was a Czech conductor, who premiered a number of significant works by Antonín Dvořák (the 2nd, 5th and 6th symphonies, more than any other conductor; other important orchestral works, four operas, the "Stabat Mater"), Bedřich Smetana ("Má vlast", five operas), Zdeněk Fibich (two operas) and other Czech composers.  He also led the first performances outside Russia of two operas by Pyotr Ilyich Tchaikovsky and the Czech premieres of seven operettas by Jacques Offenbach.  He was also a bass singer and a translator of opera librettos.

Rusalka (opera): Rusalka (] ), Op.  114, is an opera ('lyric fairy tale') by Antonín Dvořák.  The Czech libretto was written by the poet Jaroslav Kvapil (1868–1950) based on the fairy tales of Karel Jaromír Erben and Božena Němcová.  A Rusalka is a water sprite from Slavic mythology, usually inhabiting a lake or river.  "Rusalka" is one of the most successful Czech operas, and represents a cornerstone of the repertoire of Czech opera houses.

The Lovers of Manon Lescaut: The Lovers of Manon Lescaut (Italian: Gli amori di Manon Lescaut) is a 1954 French-Italian historical melodrama film directed by Mario Costa and starring Myriam Bru, Franco Interlenghi and Roger Pigaut.  It is based on the 1731 novel "Manon Lescaut" by Antoine François Prévost, which has been made into films on a number of occasions.

Milada Šubrtová: Milada Šubrtová (24 May 1924 – 1 August 2011) was a Czech operatic soprano who had a lengthy career at the National Theatre in Prague from 1948 through 1991.  She was part of an instrumental group of the post-World War II Czech opera singers that was responsible for popularizing Czech opera internationally.  She drew particular acclaim for her portrayals of the title heroines in Leoš Janáček's "Jenůfa" and Antonín Dvořák's "Rusalka".  Her voice is preserved on a few complete opera recordings made on the Supraphon label.  In 1998 she was honored with a Thalia Award.

Alfred (Dvořák): Alfred is a heroic opera in three acts by the Czech composer Antonín Dvořák.  It was Dvořák's first opera and the only one he composed to a German text.  The libretto, by Carl Theodor Körner, had already been set by Friedrich von Flotow (as "Alfred der Große") and is based on the story of the English king Alfred the Great.  Composed in 1870, "Alfred" was never performed during Dvořák's lifetime.  It received its premiere (in Czech translation) at the City Theatre, Olomouc on 10 December 1938.

Manon Lescaut (Puccini): Manon Lescaut is an opera in four acts by Giacomo Puccini, composed between 1890 and 1893.  The story is based on the 1731 novel "L'histoire du chevalier des Grieux et de Manon Lescaut" by the Abbé Prévost and should not be confused with "Manon", an 1884 opera by Jules Massenet based on the same novel.

Boulevard Solitude: Boulevard Solitude is a "Lyrisches Drama " (lyric drama) or opera in one act by Hans Werner Henze to a German libretto by Grete Weil after the play by Walter Jockisch, in its turn a modern retelling of François Prévost's "Manon Lescaut".  The piece is a reworking of the Manon Lescaut story, already adapted operatically by Auber, Massenet and Puccini, and here relocated to Paris after the Second World War where, as is noted in Grove, the focus of the story moves away from Manon and towards Armand des Grieux.  It became Henze’s first fully-fledged opera.  The work stands out for its strong jazz influences, from a composer who had hitherto been associated with twelve tone technique.

Eva Randová: Eva Randová (born 31 December 1936) is a Czech operatic mezzo-soprano who made an international career based in Germany.  She appeared at major opera houses including the Metropolitan Opera, and at festivals such as the Bayreuth Festival.  She is known for performing Czech operas by Leoš Janáček and Antonín Dvořák.

Yveta Synek Graff: Yveta Synek Graff (November 18, 1933, Prague, Czechoslovakia — November 6, 2015, Montecito, California) was a vocal and language coach and writer who helped popularize the performances of Czech operas internationally during the last quarter of the 20th century and early 21st century.  Considered one of the world's leading authorities on Czech operas, she was described by "The New York Times" as the "secret weapon of Czech opera’s velvet revolution".  She was widely admired for her translations of Czech operas into the English language which were utilized in performances by companies like the Metropolitan Opera and the Lyric Opera of Chicago.  She also coached artists for performances in the Czech language; including working on productions for the Glyndebourne Festival Opera, the Los Angeles Opera, the New York City Opera, the San Francisco Opera, and The Royal Opera in London among others.

Manon Lescaut (Auber): Manon Lescaut is an opera or opéra comique in 3 acts by Daniel Auber to a libretto by Eugène Scribe, and, like Puccini's "Manon Lescaut" and Massenet's "Manon", is based on the Abbé Prévost's novel "Manon Lescaut".  Auber's version is nowadays the least-performed of the three.

Supporting paragraphs: Manon Lescaut (Puccini) Rusalka (opera)
Answer: no