Question: what two continents formed when pangaea began breaking up
[{'answer': 'North America', 'provenance': [{'wikipedia_id': '19654281', 'title': 'Pangaea', 'start_paragraph_id': 8, 'start_character': 77, 'end_paragraph_id': 8, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Formation.\n'}]}, {'answer': 'Africa', 'provenance': [{'wikipedia_id': '19654281', 'title': 'Pangaea', 'start_paragraph_id': 8, 'start_character': 526, 'end_paragraph_id': 8, 'end_character': 532, 'bleu_score': 1.0, 'section': 'Section::::Formation.\n'}]}, {'provenance': [{'wikipedia_id': '19654281', 'title': 'Pangaea', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 370, 'bleu_score': 0.943481971234232, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8063356740240705834}, 'section': 'Section::::Rifting and break-up.\n'}]}]