Question: when did the £2 coin come out
[{'answer': '15 June 1998', 'provenance': [{'wikipedia_id': '200386', 'title': 'Two pounds (British coin)', 'start_paragraph_id': 2, 'start_character': 27, 'end_paragraph_id': 2, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '200386', 'title': 'Two pounds (British coin)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 402, 'bleu_score': 0.891788949662028, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15608144909854404853}, 'section': 'Section::::Abstract.'}]}]