Question: who designed the oldest high court of india
[{'answer': 'Walter Granville', 'provenance': [{'wikipedia_id': '2604140', 'title': 'Calcutta High Court', 'start_paragraph_id': 16, 'start_character': 41, 'end_paragraph_id': 16, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Building.\n'}]}]