Assertion: convention's text | /r/HasProperty | opened for signature
Facets:
value: on 30 march
type: TEMPORAL
value: on 5 june
type: TEMPORAL
Source sentences:
text: The Convention's text was opened for signature on 5 June 1992 at the United Nations Conference on Environment and Development (the Rio "Earth Summit").
text: The text was adopted by the United Nations General Assembly on 13 December 2006, and opened for signature on 30 March 2007.