How many acts are in the opera based on an 1820 poem by Alexander Pushkinhave, in which Mariya Matveyevna Stepanova created the lead soprano role?
Mariya Matveyevna Stepanova: Mariya Matveyevna Stepanova (Russian: Мария Матвеевна Степанова) (1811 or 1816 – 1903) was a Russian opera singer who created the leading soprano roles in "A Life for the Tsar", "Ruslan and Lyudmila", and "Dmitry Donskoy". Ruslan and Lyudmila (opera): Ruslan and Lyudmila (Russian: Руслан и Людмила , "Ruslan i Lyudmila") is an opera in five acts (eight tableaux) composed by Mikhail Glinka between 1837 and 1842. Ruslan and Lyudmila (opera):  The opera is based on the 1820 poem of the same name by Alexander Pushkin.
five