Assertion: food chain | /r/HasProperty | theoretical idea
Facets:
value: usually
type: DEGREE
value: largely
type: DEGREE
Source sentences:
text: A food chain is largely a theoretical idea and probably seldom, if ever, exists in the real world.
text: In conclusion, a food chain, usually a theoretical representation of how energy is transferred from one level in an ecosystem to another, may, at best, be described as dynamic.