Complex sentence: In accordance with his wishes, his body was cremated, returned to Puerto Rico and scattered over River La Plata, in Cayey; here the river goes to the north of Puerto Rico and into the Atlantic ocean.
Split into simpler sentences: In accordance with his wishes, his body was cremated, returned to Puerto Rico and scattered over River La Plata, in Cayey. Parting from Cayey, the River goes to the north of Puerto Rico and into the Atlantic ocean.