Assertion: amphisbaena's head | /r/CapableOf | slide with undulating movement
Facets:
Source sentences:
text: For as the twoheaded Amphisbaina (Amphisbaena) in very sooth winds the coils between and spits her poison from either mouth, rolling along and along with double-gliding motion, and head crawling joins with head while she jumps twirling waves of her back sideways: so that magnificent necklace twisted shaking its crooked back, with its pair of curving necks, which came to meet at the midnipple, a flexible twoheaded serpent thick with scales; and by the curving joints of the work the golden circle of the moving spine bent round, until the head slid about with undulating movement and belched a mimic hissing through the jaws.