Assertion: arthropod's characteristic | /r/HasProperty | bilateral symmetry
Facets:
Source sentences:
text: Characteristics of Mollusks Invertebrates, bilateral symmetry, 2 opening digestive system, foot, open circulatory system, gills
text: Characteristics of Arthropods Invertebrate, bilateral symmetry, open circulatory system, digestive system w/ 2 openings, sexually