Complex sentence: Siargao airport was built in 1964 by the late President Diosdado Macapagal and back in 2008, President Gloria Arroyo initiated a project called Super Regions Program, which aims to improve economic activity through infrastructure project.
Split into simpler sentences: Siargao airport was built in 1964 by the late President Diosdado Macapagal. In 2008, President Gloria Arroyo initiated a project called Super Regions Program which aims to improve economic activity through infrastructure project.