Question: what type of plate boundary is associated with iceland and its volcanic eruptions
[{'answer': 'the mid-Atlantic Ridge', 'provenance': [{'wikipedia_id': '669844', 'title': 'Volcanology of Iceland', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'a divergent tectonic plate boundary', 'provenance': [{'wikipedia_id': '669844', 'title': 'Volcanology of Iceland', 'start_paragraph_id': 1, 'start_character': 122, 'end_paragraph_id': 1, 'end_character': 157, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'divergent tectonic plate boundary', 'provenance': [{'wikipedia_id': '669844', 'title': 'Volcanology of Iceland', 'start_paragraph_id': 1, 'start_character': 124, 'end_paragraph_id': 1, 'end_character': 157, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '669844', 'title': 'Volcanology of Iceland', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 302, 'bleu_score': 0.7269364762454551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7620214953050015019}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '669844', 'title': 'Volcanology of Iceland', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ["The volcanoes of Iceland include a high concentration of active ones due to Iceland's location on the mid-Atlantic Ridge, a divergent tectonic plate boundary, and its location over a hot spot. The island has 30 active volcanic systems, of which 13 have erupted since the settlement of Iceland in AD 874.", "The volcanoes of Iceland include a high concentration of active ones due to Iceland's location on the mid-Atlantic Ridge, a divergent tectonic plate boundary, and its location over a hot spot. The island has 30 active volcanic systems, of which 13 have erupted since the settlement of Iceland in AD 874.", 'the mid-Atlantic Ridge, a divergent tectonic plate boundary']}}]}]