Complex sentence: By 1960, the Stable Gallery had moved to 33 East 74th Street in New York, a location that possessed enough space for the gallery exhibition area and living quarters for Ward on the ground floor opening to the garden at the rear.
Split into simpler sentences: By 1960, the Stable Gallery had moved to 33 East 74th Street in New York, a location that possessed enough space for the gallery exhibition area. The building was also large enough to contain living quarters for Ward on the ground floor, opening to the garden at the rear.