. "Lithuanian politician" . . . . "Mark Andreyevich Natanson (Russian: \u041C\u0430\u0440\u043A \u0410\u043D\u0434\u0440\u0435\u0435\u0432\u0438\u0447 \u041D\u0430\u0442\u0430\u043D\u0441\u043E\u043D; alias - \u0411\u043E\u0431\u0440\u043E\u0432, or Bobrov) (25 December 1850 (N.S. 6 January 1851), \u0160ven\u010Dionys - 29 July 1919, Berne) was a Russian revolutionary and one of the founders of the Circle of Tchaikovsky, Land and Liberty, and the Socialist-Revolutionary Party. In 1917, he was a leader of the Left Socialist-Revolutionaries, supporting the Bolsheviks in the October Revolution. He was the uncle of Alexander Berkman."@en . "1919-07-29Z"^^ . . "1919Z"^^ . . "1851-01-06Z"^^ . "1851Z"^^ . "Mark Natanson"@en . . . "Natanson, Mark"@en . "Mark Andreyevich Natanson"@en .