cleanup effort

4 triples
GPTKB property

Random triples
Subject Object
gptkb:2019_North_Dakota_oil_spill initiated by TC Energy
gptkb:Prudhoe_Bay_oil_spill removal of contaminated soil
gptkb:2010_Dalian_oil_spill involved thousands of workers and volunteers
gptkb:Taean_Oil_Spill_(2007) over 1 million volunteers participated