Assertion: cassava's root | /r/HasProperty | left in the ground
Facets:
value: for several months
type: TEMPORAL
value: over the whole winter
type: TEMPORAL
Source sentences:
text: Plants can be harvested as-needed into Spring, but we have found that sometimes roots can become bitter when left in the ground over the whole winter.
text:  the roots can be left in the ground for long periods as a food reserve and, thus, provide an insurance against famine;
text: The roots can be left in the ground for several months after reaching optimal root development.