Input: concept: Indian National Congress  answers:  ['Sonia Gandhi', 'Shankar Dayal Sharma', 'N. S. V. Chitthan', 'Indira Gandhi', 'Manmohan Singh', 'Rajiv Gandhi', 'Mahatma Gandhi', 'Pratibha Patil', 'P. V. Narasimha Rao', 'Ambareesh']
Output: 

 who was the president of indian national congress?