Since 1993, the PNP has once again been in power, this time under the leadership of Prime Minister Percival Patterson.
Before 1993 the PNP had never been able to take power.
mnli hypothesis: Before 1993 the PNP had never been able to take power. premise: Since 1993, the PNP has once again been in power, this time under the leadership of Prime Minister Percival Patterson.