has operational lifetime

4 triples
GPTKB property

Random triples
Subject Object
gptkb:EUMETSAT_Polar_System approximately 14 years
gptkb:Deploy_Tracking_and_Data_Relay_Satellite Over 15 years
gptkb:Mars_Science_Laboratory_(MSL)_Chem_Cam expected to last several years
gptkb:Chandra_High_Resolution_Camera_(HRC) over 20 years