Question: who was the british commander whose troops landed in simonstown on 7 august 1795
[{'answer': 'Sir George Keith Elphinstone', 'provenance': [{'wikipedia_id': '46911732', 'title': 'Invasion of the Cape Colony', 'start_paragraph_id': 2, 'start_character': 47, 'end_paragraph_id': 2, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46911732', 'title': 'Invasion of the Cape Colony', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1112, 'bleu_score': 0.9747285368209451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11199823166156384662}, 'section': 'Section::::Abstract.'}]}]