Assertion: african darter | /r/CapableOf | call the snakebird
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: The African Darter , sometimes called the Snakebird, is a water bird of tropical sub-Saharan Africa.
text: The African darter (Anhinga rufa), sometimes called the snakebird, is a water bird of sub-Saharan Africa and Iraq.