Complex sentence: The Armand Hammer Museum of Art and Culture Center, or the Hammer Museum as it is more commonly known, is an art museum in Los Angeles, California, operated by UCLA's School of the Arts and Architecture.
Split into simpler sentences: The Armand Hammer Museum of Art and Culture Center, or the Hammer Museum as it is more commonly known, is an art museum in Los Angeles, California. It is operated by UCLA's School of the Arts and Architecture.