Assertion: gravitational wave | /r/HasProperty | detected by the bicep2 instrument
Facets:
value: an announcement made
type: TEMPORAL
value: allegedly
type: MANNER
Source sentences:
text: They were allegedly detected by the BICEP2 instrument, an announcement made on 17 March 2014, which was withdrawn on 30 January 2015 ("the signal can be entirely attributed to dust in the Milky Way").