Complex sentence: In 1953 the Sunset galleries were sold by the Fine Arts Society, and the San Diego Men's Art Institute was forced to find temporary galleries at 904 E Street in a building formerly occupied by the City Library.
Split into simpler sentences: In 1953 the Sunset galleries were sold by the Fine Arts Society, and the San Diego Men's Art Institute was forced to find other quarters. Temporary galleries were set up at 904 E Street in a building formerly occupied by the City Library.