Assertion: yam's tuber | /r/HasProperty | exposed to light
Facets:
value: for more than one hour
type: TEMPORAL
Source sentences:
text: If the tubers are exposed to light, their solanine content can be high.
text: Try not to leave the freshly-dug tubers exposed to the sun for more than one hour.
text: Oxalates, concentrated in the skin of the tuber, are reduced if the harvested tubers are exposed to sunlight (tubers do not go green like potatoes).