Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Empresa Nacional de Petróleos-pt#Sense
SONANGOL-pt#Sense
Société pétrolière nationale angolaise-fr#Sense
Sociedade Nacional de Combustíveis de Angola-pt#Sense
Nationale Erdölgesellschaft-de#Sense