选词填空，其中一项是多余的。

equal,  be sentenced to, devote, set up , fight for

     Nelson Mandela is the first black president of South America. He
has                 all his life to realizing his dream of making black and
white people               . In 1944, he formed the ANC Youth
League. In 1952, he                  a law office to help poor black
people. Because of his fighting against the government, he
                      5 years’ hard labour. In 1963, he led black people
to blow up some government buildings, so he was put into prison for life
imprisonment(监禁).