Assertion: spacecraft's reaction wheel | /r/CapableOf | fail on may
Facets:
value: after showing some problems
type: TEMPORAL
Source sentences:
text: Then, on May 11, 2013, a second reaction wheel failed, disabling the collection of science data and threatening the continuation of the mission.
text: After showing some problems in January 2013, a second reaction wheel failed on May 11, 2013, ending Kepler's primary mission.