Sentence: Four years after surgery , she experienced a recurrence of breast cancer in the thoracic wall , and was treated with exemestane , toremifene , and fulvestrant for 1 year and 5 months .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['exemestane', 'toremifene', 'fulvestrant'], 'is_context_needed': True}]