Complex sentence: On Sunday, December 10, Juan Diego talked to archbishop for the second time and he instructed him to return to Tepeyac Hill, and ask the lady for a miraculous sign to prove her identity.
Split into simpler sentences: On Sunday, December 10, Juan Diego talked to archbishop for a second time. The latter instructed him to return to Tepeyac Hill, and ask the lady for a miraculous sign to prove her identity.