Assertion: alder's root | /r/HasAspect | great need
Facets:
value: for air
type: PURPOSE
Source sentences:
text: Avocado roots have a great need for air and can’t be in saturated soil for long without suffocating, so a spot in your yard that often puddles and doesn’t drain away within a few hours after a rain in winter is not appropriate for an avocado tree.