Sentence: Oxaliplatin , which is effective for colorectal cancer ( CRC ) in combination with 5-fluorouracil ( 5-FU ) and leucovorin ( LV ) , is widely used for metastatic CRC .
Drug combination annotation:
[{'class': 'POS', 'spans': ['Oxaliplatin', 'leucovorin', '5-fluorouracil'], 'is_context_needed': True}]