Complex sentence: Upon arrival of the corpse on May 3, it lay in state in the capitol for a night, and after the funeral the next day was placed in a receiving vault at Oak Ridge Cemetery, the site Mrs. Lincoln had requested for burial.
Split into simpler sentences: Upon arrival of the corpse on May 3, it lay in state in the capitol for a night. After the funeral the next day, his coffin was placed in a receiving vault at Oak Ridge Cemetery, the site Mrs. Lincoln requested for burial.