Complex sentence: In fact, Rubinstein was much celebrated in art, her portrait by Valentin Serov in 1910 marks the most complete realization of his mature style, the Art Deco sculptor Demetre Chiparus produced a Rubinstein figurine and she was painted by Antonio de la Gandara.
Split into simpler sentences: In fact, Rubinstein was much celebrated in art. Her portrait by Valentin Serov in 1910 marks the most complete realization of his mature style. The Art Deco sculptor Demetre Chiparus produced a Rubinstein figurine and she was painted by Antonio de la Gandara.