Premise: Burundi . Burundi gained independence in 1962 and initially had a monarchy , but a series of assassinations , coups and a general climate of regional instability culminated in the establishment of a republic and one-party state in 1966 . Burundi 's political system is that of a presidential representative democratic republic based upon a multi-party state .
Hypothesis: Burundi is a sovereign state.
Label: ENTAILMENT