Assertion: flatfish's eye | /r/CapableOf | migrate to right side
Facets:
value: within days
type: TEMPORAL
Source sentences:
text: When first hatched, the young swim upright; however, they soon start to turn to their left side and the left eye migrates to the right side.
text: Newborn flounder have eyes on both sides, but within days, the left eye migrates to the right side.