expiration period

6 triples
GPTKB property

Random triples
Subject Object
gptkb:Metro_Card one year after purchase
gptkb:Bangkok_Rabbit_card 7 years
gptkb:Los_Angeles_TAP_card 10 years
gptkb:Navigo_Easy 10 years
gptkb:Beep_card 4 years
gptkb:OPUS_card 4 years