Question: what is the phenomenon responsible for the island chain of hawaii
[{'answer': 'Hawaii hotspot', 'provenance': [{'wikipedia_id': '13309470', 'title': 'Hawaii hotspot', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13309470', 'title': 'Hawaii hotspot', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 864, 'bleu_score': 0.555709398275513, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4353736697909690170}, 'section': 'Section::::Abstract.'}]}]