Which sentence is written in Passive Voice?
1) In 1964, Mandela was sentenced to life in prison for his work against the South African government.
2) Despite being locked away, Mandela continued to influence the anti-apartheid movement.
3) In 1994, Mandela and President De Klerk established the country's first democratic elections.
4) That year, the people of South Africa elected Nelson Mandela as the first black president.