Question: who is the constitutional head of government of india
[{'answer': 'Prime Minister', 'provenance': [{'wikipedia_id': '553883', 'title': 'Government of India', 'start_paragraph_id': 20, 'start_character': 4, 'end_paragraph_id': 20, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Executive.:Prime minister.\n'}]}, {'provenance': [{'wikipedia_id': '553883', 'title': 'Government of India', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 270, 'bleu_score': 0.9099951253570091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11930885607611940839}, 'section': 'Section::::Executive.:President.\n'}]}]