Question: who was the first governor of gold coast
[{'answer': 'Sir William St. John', 'provenance': [{'wikipedia_id': '878094', 'title': 'List of governors of the Gold Coast', 'start_paragraph_id': 3, 'start_character': 12, 'end_paragraph_id': 3, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::Governors of the Gold Coast (1621–1751).\n'}]}]