Assertion: cave | /r/CapableOf | conduct survey
Facets:
value: in phong nha-kẻ bàng
type: LOCATION
value: from 10
type: TEMPORAL
Source sentences:
text: Only in 2009 did the cave become internationally known after a group of scientists from the British Cave Research Association, conducted a survey in Phong Nha-Kẻ Bàng from 10 to 14 April 2009.