Assertion: sweet potato | /r/HasProperty | poor soil crop
Facets:
value: historically
type: TEMPORAL
Source sentences:
text: Historically, sweet potatoes have been a poor soil crop that produces a decent harvest in imperfect soil, but will do better when planted in good soil and given regular doses of fertilizer.
text: Historically, sweet potatoes have been a poor soil crop that produces a decent harvest in imperfect soil, but will do much better with a little fertilizer.