Assertion: chordate's notochord | /r/CapableOf | encase in tough membrane
Facets:
Source sentences:
text: All have a tubular nerve cord (such as the spinal cord) above the notochord, which is gelatin-like and encased in a tough membrane.
text: All have a tubular nerve cord (such as the spinal cord) above the notochord, which is gelatin-like and encased in a tough membrane.