Question: What nationality are the opera singers Ronald Naldi and Samuel Ramey?
Sentence (from "Ronald Naldi"): Ronald Naldi is an American lyric tenor who has sung on the stages of the Metropolitan Opera, Lyric Opera of Chicago, Arena di Verona, Salzburger Landestheater, L'Opéra Français, and New Jersey State Opera, under the baton of maestri James Levine, Valery Gergiev, James Conlon, David Robertson, Leonard Slatkin, Joseph Colaneri, Charles Mackerras, Christopher Keene, Alfredo Silipigni, Lukas Foss, Nello Santi, Vincent LaSelva, Thomas Booth, and Eduardo Müller, and alongside singers Plácido Domingo, Luciano Pavarotti, Leo Nucci, James Morris, Samuel Ramey, and Renee Fleming, among many.
Relevant evidence: Yes