Complex sentence: Because of its cool climate, Baguio was designated by the Philippine Commission as the "Summer Capital of the Philippines" on June 1,1903 wherein the government was transferred to The City of Baguio to escape the lowland heat during summer.
Split into simpler sentences: Because of its cool climate, Baguio was designated by the Philippine Commission as the "Summer Capital of the Philippines" on June 1,1903. The government was transferred to The City of Baguio to escape the lowland heat during summer.