Question: what process causes the continents to drift apart how
[{'answer': 'Continental drift', 'provenance': [{'wikipedia_id': '6056', 'title': 'Continental drift', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6056', 'title': 'Continental drift', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1336792281200818183}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6056', 'title': 'Continental drift', 'start_paragraph_id': 1, 'start_character': 90, 'end_paragraph_id': 1, 'end_character': 653, 'bleu_score': 0.6805648866696451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1336792281200818183}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28064738', 'title': 'Timeline of the development of tectonophysics (before 1954)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses. The continental drift/ Airy-Heiskanen isostasy hypothesis had many flaws and scarce data. The fixist/ Pratt-Hayford isostasy, the contracting Earth and the expanding Earth concepts had many flaws as well.\rhighlight sentence(s) containing evidence, not only the answer', 'The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses.']}}]}, {'provenance': [{'wikipedia_id': '36717223', 'title': 'Timeline of the development of tectonophysics (after 1952)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses. The continental drift/ Airy-Heiskanen isostasy hypothesis had many flaws and scarce data. The fixist/ Pratt-Hayford isostasy, the contracting Earth and the expanding Earth concepts had many flaws as well.\rhighlight sentence(s) containing evidence, not only the answer', 'The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses.']}}]}]