Assertion list for term "natural material".
Results from Ascent++: 7
stone → IsA → natural material 0.65
slate → IsA → natural material 0.57
linen → IsA → natural material 0.41
concrete → IsA → natural material 0.39
sack → MadeOf → natural material 0.27
tub → MadeOf → natural material 0.27
juice → MadeOf → natural material 0.19