Assertion: arachnoid | /r/HasProperty | separated by wide interval
Facets:
value: comparatively
type: MANNER
value: from the pia mater
type: LOCATION
Source sentences:
text: The arachnoid is a thin, transparent sheath, separated from the pia mater by a comparatively wide interval, the subarachnoid cavity, which is filled with cerebrospinal fluid.