Task: Question Generation
Input (English): Following years of mistreatment, the Taínos began to adopt suicidal behaviors, with women aborting or killing their infants and men jumping from the cliffs or ingesting untreated cassava, a violent poison. Eventually, a Taíno Cacique named Enriquillo managed to hold out in the Baoruco Mountain Range for thirteen years, causing serious damage to the Spanish, Carib-held plantations and their Indian auxiliaries. Hearing of the seriousness of the revolt, Emperor Charles V (also King of Spain) sent captain Francisco Barrionuevo to negotiate a peace treaty with the ever-increasing number of rebels. Two months later, after consultation with the Audencia of Santo Domingo, Enriquillo was offered any part of the island to live in peace.
Output (English): Who was sent to negotiate a peace treaty with the rebels?