Question: What was the name of the guerilla force that eventually challenged the rule of the Cuban dictator who was U.S.-backed from 1952 to 1959?
Sentence (from "North Kalimantan Communist Party"): On 17 October 1990, the North Kalimantan Communist Party signed a peace agreement with the Sarawak state government, formally ending the Sarawak Communist Insurgency.
Relevant evidence: No