<human>: Does "In 1980 the PAIGC acknowledged in its newspaper Nó Pintcha (dated 29 November 1980) that many Gueinean soldiers had been executed and buried in unmarked collective graves in the woods of Cumerá, Portogole, and Mansabá." correctly answer the question of When did the PAIGC acknowledge the executions?
OPTIONS:
- yes
- no
<bot>: yes