Assertion: ring's structure | /r/CapableOf | extend all the way
Facets:
value: around the central atom
type: LOCATION
Source sentences:
text: A third closely related biological structure, the chlorin ring system found in chlorophyll, is intermediate between porphyrin and corrin, having 20 carbons like the porphyrins and a conjugated structure extending all the way around the central atom, but with only 6 of the 8 edge carbons participating.