Question: when was the spca established in south africa
[{'answer': '1872', 'provenance': [{'wikipedia_id': '47651488', 'title': 'Cape of Good Hope SPCA', 'start_paragraph_id': 1, 'start_character': 15, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47651488', 'title': 'Cape of Good Hope SPCA', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 534, 'bleu_score': 0.9483044717870771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 106789994420878536}, 'section': 'Section::::Abstract.'}]}]