It was perpetrated by members of the United Self-Defense Forces of Colombia ( AUC paramilitary group ) against alleged members of the Revolutionary Armed Forces of Colombia ( FARC guerrilla ) .
PRON AUX VERB ADP NOUN ADP DET PROPN PROPN PROPN ADP PROPN ( NOUN ADJ NOUN ) ADP ADJ NOUN ADP DET PROPN PROPN PROPN ADP PROPN ( PROPN NOUN ) .