Question: what was the landmass called when all the continents were one
[{'answer': 'Pangaea', 'provenance': [{'wikipedia_id': '19654281', 'title': 'Pangaea', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19654281', 'title': 'Pangaea', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 517, 'bleu_score': 0.9451526628827591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15089632653298004280}, 'section': 'Section::::Abstract.'}]}]