Assertion: opportunity | /r/HasProperty | active
Facets:
value: from 2004
type: TEMPORAL
value: on mars
type: LOCATION
value: until the middle of 2018
type: TEMPORAL
Source sentences:
text: Opportunity, also known as MER-B (Mars Exploration Rover – B) or MER-1, and nicknamed "Oppy", is a robotic rover that was active on Mars from 2004 until the middle of 2018.