Assertion: helium balloon | /r/HasProperty | launched approximately 80 kilometres
Facets:
Source sentences:
text: PARIS) project, which was released at an altitude of 27,307 metres (89,590 ft), from a helium balloon that was launched approximately 80 kilometres (50 mi) west of Madrid, Spain on October 28, 2010, and recorded by The Register's "special projects bureau".