Complex sentence: As President, Gloria Macapagal-Arroyo promised the Philippines that she would not run for presidency in the next elections, however, on the 3rd of October 2003, she changed her mind, roughly nine months after declaring she would not run for Presidency.
Split into simpler sentences: As President, Gloria Macapagal-Arroyo promised the Philippines that she would not run for presidency in the next elections. However, on the 3rd of October 2003, she changed her mind, roughly nine months after declaring she would not run for Presidency.