Complex sentence: On March 4,1253, after five years of sickness and pain, while her nurses Beldia and Bonaventura were waiting for her to pass away, Saint Gregory the Great allegedly appeared in Fina's room and predicted that she would die on the 12th of March.
Split into simpler sentences: On March 4,1253, after five years of sickness and pain, her nurses Beldia and Bonaventura were waiting for her to die. Suddenly, Saint Gregory the Great allegedly appeared in Fina's room and predicted that she would die on the 12th of March.