Complex sentence: The work's unusual dimensions of 140 x 438 cm add to its haunted, spectral aura, while it's two titles are derived from names Goya's children gave it, as infants, after his death in 1828.
Split into simpler sentences: The work's unusual dimensions of 140 x 438 cm add to its haunted, spectral aura. The painting's two titles are derived from names Goya's children gave after his death in 1828.