Original sentence: Proponents note that Kyoto is an first step , as requirements to meet the UNFCCC will be modified until the objective is met, as required by UNFCCC Article 4.2(d)
Edited sentence: Proponents note that Kyoto is an important first step , as requirements to meet the UNFCCC will be modified until the objective is met, as required by UNFCCC Article 4.2(d)