Question: how many different colours are on the south african flag
[{'answer': 'six', 'provenance': [{'wikipedia_id': '89355', 'title': 'Flag of South Africa', 'start_paragraph_id': 4, 'start_character': 104, 'end_paragraph_id': 4, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Colours.\n'}]}, {'provenance': [{'wikipedia_id': '89355', 'title': 'Flag of South Africa', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 291, 'bleu_score': 0.6576841496272671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13797732677987256538}, 'section': 'Section::::Colours.\n'}]}]