Complex sentence: His hands are around his crotch, he appears to be either masturbating, exposing himself or mentally retarded; according to art critic Fred Licht, "The sickly grin of his face certainly seems indicative of some sort of sexual compulsion".
Split into simpler sentences: His hands are around his crotch; he appears to be either masturbating, exposing himself or simply mentally retarded. According to art critic Fred Licht, "The sickly grin of his face certainly seems indicative of some sort of sexual compulsion".