Question: who signed the 1900 buganda agreement on behalf of the british
[{'answer': 'Sir Harry Johnston', 'provenance': [{'wikipedia_id': '24598516', 'title': 'Buganda Agreement (1900)', 'start_paragraph_id': 3, 'start_character': 207, 'end_paragraph_id': 3, 'end_character': 225, 'bleu_score': 1.0, 'section': 'Section::::Agreement.\n'}]}, {'provenance': [{'wikipedia_id': '24598516', 'title': 'Buganda Agreement (1900)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 569, 'bleu_score': 0.62116764663862, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2831826089627120084}, 'section': 'Section::::Agreement.\n'}]}]