Premise:  the sculpture of Two Slaves by Michelangelo; Leonardo da Vinci's Mona Lisa (La Joconde) and Virgin of the Rocks; Titian's voluptuous Woman at Her Toilet and somber Entombment of Christ; the poignant Old Man and His Grandson of Ghirlandaio.
Hypothesis: Two Slaves by Raphael, and Monet's Mona Lisa and Warhol's Virgin of the Rocks.
Label: contradiction