Sent_en: 2zh Russian Prime Minister Vladimir Putin was immediately appointed by Dmitry Medvedev, the president, as the head of the commission to investigate the crash.
Sent_yy: 俄罗斯总理弗拉基米尔·普京立即被总统德米特里·梅德韦杰夫任命为调查坠机事件的委员会主席。