Question: S.Easwara Varma is a violinist who has accompanied an Indian vocalist who is one of ten musicians to receive the Madras Music Academy's Sangeetha Kalanidhi before they turned what?
{'answer': '50 years of age', 'supporting_facts': [['S. Easwara Varma', 0], ['S. Easwara Varma', 3], ['Sanjay Subrahmanyan', 0], ['Sanjay Subrahmanyan', 1], ['Sanjay Subrahmanyan', 2]]}