Complex sentence: However, the structure didn't last long because of natural calamities so by 1773, the construction of the present church began through the initiative of Fr. Alonso de Fentanes and the people of Tanay.
Split into simpler sentences: However, the structure did not last long because of natural calamities. By 1773, the construction of the present church began through the initiative of Fr. Alonso de Fentanes and the people of Tanay.