claim: Rick Ross released ten studio albums.
evidence: Grand Duke Sergei may refer to  :. Grand Duke Sergei Alexandrovich of Russia -LRB- 1857-1905 -RRB-. Grand Duke Sergei Alexandrovich of Russia. Grand Duke Sergei Alexandrovich of Russia. Grand Duke Sergei Mikhailovich of Russia -LRB- 1869-1918 -RRB-. Grand Duke Sergei Mikhailovich of Russia. Grand Duke Sergei Mikhailovich of Russia