Assertion: bone's layer | /r/HasProperty | outer
Facets:
Source sentences:
text: Bones have an outer layer that is like a thin skin or membrane (mem-brain).
text: The occipital bone, like the other seven cranial bones, has outer and inner layers (also called plates or tables) of cortical bone tissue between which is the cancellous bone tissue known in the cranial bones as diploë.