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frames- As [ARG0 a police helicopter] [rel circled] [ARGM-LOC overhead] , Mr. Sisulu repeated the ANC 's demands *ICH*-1 on the government * to create a climate for negotiations : * Release all political prisoners unconditionally ; * lift all bans and restrictions on individuals and organizations ; * remove all troops from the black townships ; * end the state of emergency , and * cease all political trials and political executions .