Sentence: First , we searched for the most synergistic combination of KPT-8602 with dexamethasone , vincristine , or doxorubicin
Drug combination annotation:
[{'class': 'POS', 'spans': ['KPT-8602', 'dexamethasone'], 'is_context_needed': True}, {'class': 'COMB', 'spans': [0, 2], 'is_context_needed': True}, {'class': 'COMB', 'spans': [0, 3], 'is_context_needed': True}]