Complex sentence: The Institute of Puerto Rican Culture, an agency of the Government of Puerto Rico, runs the Ponce Massacre Museum, located at the intersection where the events took place (corner of Marina and Aurora streets).
Split into simpler sentences: The Institute of Puerto Rican Culture, an agency of the Government of Puerto Rico, runs the Ponce Massacre Museum. It is located at the intersection where the events took place (corner of Marina and Aurora streets).